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Class: PathExpression

An expression that describes an abstract path from an object to another through a sequence of slot lookups

URI: linkml:PathExpression

classDiagram class PathExpression Expression <|-- PathExpression Extensible <|-- PathExpression Annotatable <|-- PathExpression CommonMetadata <|-- PathExpression PathExpression : aliases PathExpression : all_of PathExpression --> path_expression : all_of PathExpression : alt_descriptions PathExpression --> alt_description : alt_descriptions PathExpression : annotations PathExpression --> annotation : annotations PathExpression : any_of PathExpression --> path_expression : any_of PathExpression : broad_mappings PathExpression : categories PathExpression : close_mappings PathExpression : comments PathExpression : contributors PathExpression : created_by PathExpression : created_on PathExpression : deprecated PathExpression : deprecated_element_has_exact_replacement PathExpression : deprecated_element_has_possible_replacement PathExpression : description PathExpression : exact_mappings PathExpression : exactly_one_of PathExpression --> path_expression : exactly_one_of PathExpression : examples PathExpression --> example : examples PathExpression : extensions PathExpression --> extension : extensions PathExpression : followed_by PathExpression --> path_expression : followed_by PathExpression : from_schema PathExpression : imported_from PathExpression : in_language PathExpression : in_subset PathExpression --> subset_definition : in_subset PathExpression : keywords PathExpression : last_updated_on PathExpression : mappings PathExpression : modified_by PathExpression : narrow_mappings PathExpression : none_of PathExpression --> path_expression : none_of PathExpression : notes PathExpression : range_expression PathExpression --> anonymous_class_expression : range_expression PathExpression : rank PathExpression : related_mappings PathExpression : reversed PathExpression : see_also PathExpression : source PathExpression : status PathExpression : structured_aliases PathExpression --> structured_alias : structured_aliases PathExpression : title PathExpression : todos PathExpression : traverse PathExpression --> slot_definition : traverse

Inheritance

Slots

Name Cardinality and Range Description Inheritance
followed_by 0..1
PathExpression		 in a sequential list, this indicates the next member direct
none_of 0..*
PathExpression		 holds if none of the expressions hold direct
any_of 0..*
PathExpression		 holds if at least one of the expressions hold direct
all_of 0..*
PathExpression		 holds if all of the expressions hold direct
exactly_one_of 0..*
PathExpression		 holds if only one of the expressions hold direct
reversed 0..1
Boolean		 true if the slot is to be inversed direct
traverse 0..1
SlotDefinition		 the slot to traverse direct
range_expression 0..1
AnonymousClassExpression		 A range that is described as a boolean expression combining existing ranges direct
extensions 0..*
Extension		 a tag/text tuple attached to an arbitrary element Extensible
annotations 0..*
Annotation		 a collection of tag/text tuples with the semantics of OWL Annotation Annotatable
description 0..1 recommended
String		 a textual description of the element's purpose and use CommonMetadata
alt_descriptions 0..*
AltDescription		 A sourced alternative description for an element CommonMetadata
title 0..1
String		 A concise human-readable display label for the element CommonMetadata
deprecated 0..1
String		 Description of why and when this element will no longer be used CommonMetadata
todos 0..*
String		 Outstanding issues that needs resolution CommonMetadata
notes 0..*
String		 editorial notes about an element intended primarily for internal consumption CommonMetadata
comments 0..*
String		 notes and comments about an element intended primarily for external consumpti... CommonMetadata
examples 0..*
Example		 example usages of an element CommonMetadata
in_subset 0..*
SubsetDefinition		 used to indicate membership of a term in a defined subset of terms used for a... CommonMetadata
from_schema 0..1
Uri		 id of the schema that defined the element CommonMetadata
imported_from 0..1
String		 the imports entry that this element was derived from CommonMetadata
source 0..1
Uriorcurie		 A related resource from which the element is derived CommonMetadata
in_language 0..1
String		 the primary language used in the sources CommonMetadata
see_also 0..*
Uriorcurie		 A list of related entities or URLs that may be of relevance CommonMetadata
deprecated_element_has_exact_replacement 0..1
Uriorcurie		 When an element is deprecated, it can be automatically replaced by this uri o... CommonMetadata
deprecated_element_has_possible_replacement 0..1
Uriorcurie		 When an element is deprecated, it can be potentially replaced by this uri or ... CommonMetadata
aliases 0..*
String		 Alternate names/labels for the element CommonMetadata
structured_aliases 0..*
StructuredAlias		 A list of structured_alias objects, used to provide aliases in conjunction wi... CommonMetadata
mappings 0..*
Uriorcurie		 A list of terms from different schemas or terminology systems that have compa... CommonMetadata
exact_mappings 0..*
Uriorcurie		 A list of terms from different schemas or terminology systems that have ident... CommonMetadata
close_mappings 0..*
Uriorcurie		 A list of terms from different schemas or terminology systems that have close... CommonMetadata
related_mappings 0..*
Uriorcurie		 A list of terms from different schemas or terminology systems that have relat... CommonMetadata
narrow_mappings 0..*
Uriorcurie		 A list of terms from different schemas or terminology systems that have narro... CommonMetadata
broad_mappings 0..*
Uriorcurie		 A list of terms from different schemas or terminology systems that have broad... CommonMetadata
created_by 0..1
Uriorcurie		 agent that created the element CommonMetadata
contributors 0..*
Uriorcurie		 agent that contributed to the element CommonMetadata
created_on 0..1
Datetime		 time at which the element was created CommonMetadata
last_updated_on 0..1
Datetime		 time at which the element was last updated CommonMetadata
modified_by 0..1
Uriorcurie		 agent that modified the element CommonMetadata
status 0..1
Uriorcurie		 status of the element CommonMetadata
rank 0..1
Integer		 the relative order in which the element occurs, lower values are given preced... CommonMetadata
categories 0..*
Uriorcurie		 Controlled terms used to categorize an element CommonMetadata
keywords 0..*
String		 Keywords or tags used to describe the element CommonMetadata

Usages

used by used in type used
PathExpression followed_by range PathExpression
PathExpression none_of range PathExpression
PathExpression any_of range PathExpression
PathExpression all_of range PathExpression
PathExpression exactly_one_of range PathExpression
SlotDefinition path_rule range PathExpression

Identifier and Mapping Information

Schema Source

  • from schema: https://w3id.org/linkml/meta

Mappings

Mapping Type Mapped Value
self linkml:PathExpression
native linkml:PathExpression

LinkML Source

Direct

name: path_expression
description: An expression that describes an abstract path from an object to another
  through a sequence of slot lookups
from_schema: https://w3id.org/linkml/meta
mixins:
- expression
- extensible
- annotatable
- common_metadata
slots:
- followed_by
- none_of
- any_of
- all_of
- exactly_one_of
- reversed
- traverse
- range_expression
slot_usage:
  followed_by:
    name: followed_by
    domain_of:
    - path_expression
    range: path_expression
  any_of:
    name: any_of
    domain_of:
    - type_expression
    - path_expression
    - slot_expression
    - class_expression
    range: path_expression
  exactly_one_of:
    name: exactly_one_of
    domain_of:
    - type_expression
    - path_expression
    - slot_expression
    - class_expression
    range: path_expression
  none_of:
    name: none_of
    domain_of:
    - type_expression
    - path_expression
    - slot_expression
    - class_expression
    range: path_expression
  all_of:
    name: all_of
    domain_of:
    - type_expression
    - path_expression
    - slot_expression
    - class_expression
    range: path_expression

Induced

name: path_expression
description: An expression that describes an abstract path from an object to another
  through a sequence of slot lookups
from_schema: https://w3id.org/linkml/meta
mixins:
- expression
- extensible
- annotatable
- common_metadata
slot_usage:
  followed_by:
    name: followed_by
    domain_of:
    - path_expression
    range: path_expression
  any_of:
    name: any_of
    domain_of:
    - type_expression
    - path_expression
    - slot_expression
    - class_expression
    range: path_expression
  exactly_one_of:
    name: exactly_one_of
    domain_of:
    - type_expression
    - path_expression
    - slot_expression
    - class_expression
    range: path_expression
  none_of:
    name: none_of
    domain_of:
    - type_expression
    - path_expression
    - slot_expression
    - class_expression
    range: path_expression
  all_of:
    name: all_of
    domain_of:
    - type_expression
    - path_expression
    - slot_expression
    - class_expression
    range: path_expression
attributes:
  followed_by:
    name: followed_by
    description: in a sequential list, this indicates the next member
    from_schema: https://w3id.org/linkml/meta
    rank: 1000
    alias: followed_by
    owner: path_expression
    domain_of:
    - path_expression
    range: path_expression
  none_of:
    name: none_of
    description: holds if none of the expressions hold
    from_schema: https://w3id.org/linkml/meta
    rank: 105
    is_a: boolean_slot
    multivalued: true
    alias: none_of
    owner: path_expression
    domain_of:
    - type_expression
    - path_expression
    - slot_expression
    - class_expression
    range: path_expression
  any_of:
    name: any_of
    description: holds if at least one of the expressions hold
    from_schema: https://w3id.org/linkml/meta
    rank: 101
    is_a: boolean_slot
    multivalued: true
    alias: any_of
    owner: path_expression
    domain_of:
    - type_expression
    - path_expression
    - slot_expression
    - class_expression
    range: path_expression
  all_of:
    name: all_of
    description: holds if all of the expressions hold
    from_schema: https://w3id.org/linkml/meta
    rank: 107
    is_a: boolean_slot
    multivalued: true
    alias: all_of
    owner: path_expression
    domain_of:
    - type_expression
    - path_expression
    - slot_expression
    - class_expression
    range: path_expression
  exactly_one_of:
    name: exactly_one_of
    description: holds if only one of the expressions hold
    from_schema: https://w3id.org/linkml/meta
    rank: 103
    is_a: boolean_slot
    multivalued: true
    alias: exactly_one_of
    owner: path_expression
    domain_of:
    - type_expression
    - path_expression
    - slot_expression
    - class_expression
    range: path_expression
  reversed:
    name: reversed
    description: true if the slot is to be inversed
    from_schema: https://w3id.org/linkml/meta
    rank: 1000
    alias: reversed
    owner: path_expression
    domain_of:
    - path_expression
    range: boolean
  traverse:
    name: traverse
    description: the slot to traverse
    from_schema: https://w3id.org/linkml/meta
    rank: 1000
    alias: traverse
    owner: path_expression
    domain_of:
    - path_expression
    range: slot_definition
  range_expression:
    name: range_expression
    description: A range that is described as a boolean expression combining existing
      ranges
    comments:
    - one use for this is being able to describe a range using any_of expressions,
      for example to combine two enums
    in_subset:
    - SpecificationSubset
    from_schema: https://w3id.org/linkml/meta
    status: testing
    rank: 1000
    domain: slot_expression
    alias: range_expression
    owner: path_expression
    domain_of:
    - path_expression
    - slot_expression
    range: anonymous_class_expression
  extensions:
    name: extensions
    description: a tag/text tuple attached to an arbitrary element
    from_schema: https://w3id.org/linkml/meta
    rank: 1000
    domain: extensible
    multivalued: true
    alias: extensions
    owner: path_expression
    domain_of:
    - extension
    - extensible
    range: extension
    inlined: true
  annotations:
    name: annotations
    description: a collection of tag/text tuples with the semantics of OWL Annotation
    from_schema: https://w3id.org/linkml/meta
    rank: 1000
    is_a: extensions
    domain: annotatable
    multivalued: true
    alias: annotations
    owner: path_expression
    domain_of:
    - annotatable
    - annotation
    range: annotation
    inlined: true
  description:
    name: description
    description: a textual description of the element's purpose and use
    in_subset:
    - BasicSubset
    from_schema: https://w3id.org/linkml/meta
    aliases:
    - definition
    exact_mappings:
    - dcterms:description
    - schema:description
    rank: 5
    domain: element
    slot_uri: skos:definition
    alias: description
    owner: path_expression
    domain_of:
    - common_metadata
    - permissible_value
    range: string
    recommended: true
  alt_descriptions:
    name: alt_descriptions
    description: A sourced alternative description for an element
    in_subset:
    - BasicSubset
    from_schema: https://w3id.org/linkml/meta
    aliases:
    - alternate definitions
    rank: 1000
    domain: element
    multivalued: true
    alias: alt_descriptions
    owner: path_expression
    domain_of:
    - common_metadata
    range: alt_description
    inlined: true
  title:
    name: title
    description: A concise human-readable display label for the element. The title
      should mirror the name, and should use ordinary textual punctuation.
    in_subset:
    - BasicSubset
    from_schema: https://w3id.org/linkml/meta
    aliases:
    - long name
    rank: 3
    domain: element
    slot_uri: dcterms:title
    alias: title
    owner: path_expression
    domain_of:
    - common_metadata
    range: string
  deprecated:
    name: deprecated
    description: Description of why and when this element will no longer be used
    comments:
    - note that linkml does not use a boolean to indicate deprecation status - the
      presence of a string value in this field is sufficient to indicate deprecation.
    in_subset:
    - BasicSubset
    from_schema: https://w3id.org/linkml/meta
    close_mappings:
    - owl:deprecated
    rank: 1000
    domain: element
    alias: deprecated
    owner: path_expression
    domain_of:
    - common_metadata
    range: string
  todos:
    name: todos
    description: Outstanding issues that needs resolution
    in_subset:
    - BasicSubset
    from_schema: https://w3id.org/linkml/meta
    rank: 1000
    domain: element
    multivalued: true
    alias: todos
    owner: path_expression
    domain_of:
    - common_metadata
    range: string
  notes:
    name: notes
    description: editorial notes about an element intended primarily for internal
      consumption
    in_subset:
    - BasicSubset
    from_schema: https://w3id.org/linkml/meta
    rank: 1000
    domain: element
    slot_uri: skos:editorialNote
    multivalued: true
    alias: notes
    owner: path_expression
    domain_of:
    - common_metadata
    range: string
  comments:
    name: comments
    description: notes and comments about an element intended primarily for external
      consumption
    in_subset:
    - BasicSubset
    from_schema: https://w3id.org/linkml/meta
    exact_mappings:
    - rdfs:comment
    rank: 1000
    domain: element
    slot_uri: skos:note
    multivalued: true
    alias: comments
    owner: path_expression
    domain_of:
    - common_metadata
    range: string
  examples:
    name: examples
    description: example usages of an element
    in_subset:
    - BasicSubset
    from_schema: https://w3id.org/linkml/meta
    close_mappings:
    - vann:example
    rank: 1000
    singular_name: example
    domain: element
    multivalued: true
    alias: examples
    owner: path_expression
    domain_of:
    - common_metadata
    range: example
    inlined: true
  in_subset:
    name: in_subset
    description: used to indicate membership of a term in a defined subset of terms
      used for a particular domain or application.
    comments:
    - an example of use in the translator_minimal subset in the biolink model, holding
      the minimal set of predicates used in a translator knowledge graph
    in_subset:
    - BasicSubset
    from_schema: https://w3id.org/linkml/meta
    rank: 1000
    domain: element
    slot_uri: OIO:inSubset
    multivalued: true
    alias: in_subset
    owner: path_expression
    domain_of:
    - common_metadata
    range: subset_definition
  from_schema:
    name: from_schema
    description: id of the schema that defined the element
    notes:
    - A stronger model would be range schema_definition, but this doesn't address
      the import model
    in_subset:
    - SpecificationSubset
    from_schema: https://w3id.org/linkml/meta
    rank: 1000
    domain: element
    slot_uri: skos:inScheme
    readonly: supplied by the schema loader or schema view
    alias: from_schema
    owner: path_expression
    domain_of:
    - common_metadata
    range: uri
  imported_from:
    name: imported_from
    description: the imports entry that this element was derived from.  Empty means
      primary source
    from_schema: https://w3id.org/linkml/meta
    rank: 1000
    domain: element
    readonly: supplied by the schema loader or schema view
    alias: imported_from
    owner: path_expression
    domain_of:
    - common_metadata
    range: string
  source:
    name: source
    description: A related resource from which the element is derived.
    comments:
    - The described resource may be derived from the related resource in whole or
      in part
    in_subset:
    - BasicSubset
    from_schema: https://w3id.org/linkml/meta
    aliases:
    - origin
    - derived from
    close_mappings:
    - prov:wasDerivedFrom
    - schema:isBasedOn
    rank: 1000
    domain: element
    slot_uri: dcterms:source
    alias: source
    owner: path_expression
    domain_of:
    - common_metadata
    range: uriorcurie
  in_language:
    name: in_language
    conforms_to: https://www.rfc-editor.org/rfc/bcp/bcp47.txt
    description: the primary language used in the sources
    comments:
    - Recommended to use a string from IETF BCP 47
    from_schema: https://w3id.org/linkml/meta
    rank: 1000
    slot_uri: schema:inLanguage
    alias: in_language
    owner: path_expression
    domain_of:
    - common_metadata
    range: string
  see_also:
    name: see_also
    description: A list of related entities or URLs that may be of relevance
    in_subset:
    - BasicSubset
    from_schema: https://w3id.org/linkml/meta
    rank: 1000
    domain: element
    slot_uri: rdfs:seeAlso
    multivalued: true
    alias: see_also
    owner: path_expression
    domain_of:
    - common_metadata
    range: uriorcurie
  deprecated element has exact replacement:
    name: deprecated element has exact replacement
    description: When an element is deprecated, it can be automatically replaced by
      this uri or curie
    from_schema: https://w3id.org/linkml/meta
    mappings:
    - IAO:0100001
    rank: 1000
    alias: deprecated_element_has_exact_replacement
    owner: path_expression
    domain_of:
    - common_metadata
    range: uriorcurie
  deprecated element has possible replacement:
    name: deprecated element has possible replacement
    description: When an element is deprecated, it can be potentially replaced by
      this uri or curie
    from_schema: https://w3id.org/linkml/meta
    mappings:
    - OIO:consider
    rank: 1000
    alias: deprecated_element_has_possible_replacement
    owner: path_expression
    domain_of:
    - common_metadata
    range: uriorcurie
  aliases:
    name: aliases
    description: Alternate names/labels for the element. These do not alter the semantics
      of the schema, but may be useful to support search and alignment.
    comments:
    - not be confused with the metaslot alias.
    in_subset:
    - BasicSubset
    from_schema: https://w3id.org/linkml/meta
    aliases:
    - synonyms
    - alternate names
    - alternative labels
    - designations
    exact_mappings:
    - schema:alternateName
    rank: 1000
    domain: element
    slot_uri: skos:altLabel
    multivalued: true
    alias: aliases
    owner: path_expression
    domain_of:
    - common_metadata
    range: string
  structured_aliases:
    name: structured_aliases
    description: A list of structured_alias objects, used to provide aliases in conjunction
      with additional metadata.
    from_schema: https://w3id.org/linkml/meta
    see_also:
    - linkml:aliases
    rank: 1000
    slot_uri: skosxl:altLabel
    multivalued: true
    alias: structured_aliases
    owner: path_expression
    domain_of:
    - common_metadata
    range: structured_alias
    inlined: true
  mappings:
    name: mappings
    description: A list of terms from different schemas or terminology systems that
      have comparable meaning. These may include terms that are precisely equivalent,
      broader or narrower in meaning, or otherwise semantically related but not equivalent
      from a strict ontological perspective.
    from_schema: https://w3id.org/linkml/meta
    aliases:
    - xrefs
    - identifiers
    - alternate identifiers
    - alternate ids
    rank: 1000
    slot_uri: skos:mappingRelation
    multivalued: true
    alias: mappings
    owner: path_expression
    domain_of:
    - common_metadata
    range: uriorcurie
  exact mappings:
    name: exact mappings
    description: A list of terms from different schemas or terminology systems that
      have identical meaning.
    from_schema: https://w3id.org/linkml/meta
    rank: 1000
    is_a: mappings
    slot_uri: skos:exactMatch
    multivalued: true
    inherited: false
    alias: exact_mappings
    owner: path_expression
    domain_of:
    - common_metadata
    - UnitOfMeasure
    range: uriorcurie
  close mappings:
    name: close mappings
    description: A list of terms from different schemas or terminology systems that
      have close meaning.
    from_schema: https://w3id.org/linkml/meta
    rank: 1000
    is_a: mappings
    slot_uri: skos:closeMatch
    multivalued: true
    inherited: false
    alias: close_mappings
    owner: path_expression
    domain_of:
    - common_metadata
    range: uriorcurie
  related mappings:
    name: related mappings
    description: A list of terms from different schemas or terminology systems that
      have related meaning.
    from_schema: https://w3id.org/linkml/meta
    rank: 1000
    is_a: mappings
    slot_uri: skos:relatedMatch
    multivalued: true
    inherited: false
    alias: related_mappings
    owner: path_expression
    domain_of:
    - common_metadata
    range: uriorcurie
  narrow mappings:
    name: narrow mappings
    description: A list of terms from different schemas or terminology systems that
      have narrower meaning.
    from_schema: https://w3id.org/linkml/meta
    rank: 1000
    is_a: mappings
    slot_uri: skos:narrowMatch
    multivalued: true
    inherited: false
    alias: narrow_mappings
    owner: path_expression
    domain_of:
    - common_metadata
    range: uriorcurie
  broad mappings:
    name: broad mappings
    description: A list of terms from different schemas or terminology systems that
      have broader meaning.
    from_schema: https://w3id.org/linkml/meta
    rank: 1000
    is_a: mappings
    slot_uri: skos:broadMatch
    multivalued: true
    inherited: false
    alias: broad_mappings
    owner: path_expression
    domain_of:
    - common_metadata
    range: uriorcurie
  created_by:
    name: created_by
    description: agent that created the element
    in_subset:
    - BasicSubset
    from_schema: https://w3id.org/linkml/meta
    rank: 1000
    domain: element
    slot_uri: pav:createdBy
    alias: created_by
    owner: path_expression
    domain_of:
    - common_metadata
    range: uriorcurie
  contributors:
    name: contributors
    description: agent that contributed to the element
    in_subset:
    - BasicSubset
    from_schema: https://w3id.org/linkml/meta
    rank: 1000
    domain: element
    slot_uri: dcterms:contributor
    multivalued: true
    alias: contributors
    owner: path_expression
    domain_of:
    - common_metadata
    range: uriorcurie
  created_on:
    name: created_on
    description: time at which the element was created
    in_subset:
    - BasicSubset
    from_schema: https://w3id.org/linkml/meta
    rank: 1000
    domain: element
    slot_uri: pav:createdOn
    alias: created_on
    owner: path_expression
    domain_of:
    - common_metadata
    range: datetime
  last_updated_on:
    name: last_updated_on
    description: time at which the element was last updated
    in_subset:
    - BasicSubset
    from_schema: https://w3id.org/linkml/meta
    rank: 1000
    domain: element
    slot_uri: pav:lastUpdatedOn
    alias: last_updated_on
    owner: path_expression
    domain_of:
    - common_metadata
    range: datetime
  modified_by:
    name: modified_by
    description: agent that modified the element
    in_subset:
    - BasicSubset
    from_schema: https://w3id.org/linkml/meta
    rank: 1000
    domain: element
    slot_uri: oslc:modifiedBy
    alias: modified_by
    owner: path_expression
    domain_of:
    - common_metadata
    range: uriorcurie
  status:
    name: status
    description: status of the element
    examples:
    - value: bibo:draft
    in_subset:
    - BasicSubset
    from_schema: https://w3id.org/linkml/meta
    see_also:
    - https://www.hl7.org/fhir/valueset-publication-status.html
    - https://www.hl7.org/fhir/versions.html#std-process
    aliases:
    - workflow status
    rank: 1000
    domain: element
    slot_uri: bibo:status
    alias: status
    owner: path_expression
    domain_of:
    - common_metadata
    range: uriorcurie
  rank:
    name: rank
    description: the relative order in which the element occurs, lower values are
      given precedence
    comments:
    - the rank of an element does not affect the semantics
    in_subset:
    - SpecificationSubset
    - BasicSubset
    from_schema: https://w3id.org/linkml/meta
    aliases:
    - order
    - precedence
    - display order
    exact_mappings:
    - qudt:order
    - qb:order
    rank: 51
    slot_uri: sh:order
    alias: rank
    owner: path_expression
    domain_of:
    - common_metadata
    - class_rule
    range: integer
  categories:
    name: categories
    description: Controlled terms used to categorize an element.
    comments:
    - if you wish to use uncontrolled terms or terms that lack identifiers then use
      the keywords element
    in_subset:
    - BasicSubset
    from_schema: https://w3id.org/linkml/meta
    rank: 1000
    singular_name: category
    slot_uri: dcterms:subject
    multivalued: true
    alias: categories
    owner: path_expression
    domain_of:
    - common_metadata
    - structured_alias
    range: uriorcurie
  keywords:
    name: keywords
    description: Keywords or tags used to describe the element
    in_subset:
    - BasicSubset
    from_schema: https://w3id.org/linkml/meta
    rank: 1000
    singular_name: keyword
    domain: element
    slot_uri: schema:keywords
    multivalued: true
    alias: keywords
    owner: path_expression
    domain_of:
    - common_metadata
    range: string