add KL/AT, sources to MetaEdge

ChangeLog.md

@@ -4,6 +4,7 @@
 - Update yaml descriptions to match 2.0.0 changes and clarify desired behavior. ([PR](https://github.com/NCATSTranslator/ReasonerAPI/pull/565/changes))
 - Added `Response.data_release_versions` ([PR](https://github.com/NCATSTranslator/ReasonerAPI/pull/569/changes))
 - Renamed `PathConstraint.intermediate_categories` to `PathConstraint.required_intermediate_categories` ([PR](https://github.com/NCATSTranslator/ReasonerAPI/pull/570/changes))
+- Added `MetaEdge.knowledge_levels`, `MetaEdge.agent_types`, `MetaEdge.sources` to MetaKnowledgeGraph [PR](https://github.com/NCATSTranslator/ReasonerAPI/pull/574)
 
 Documentation/Git action updates:
 - Adjust spec docs to reflect making `AttributeConstraint.name` optional ([PR](https://github.com/NCATSTranslator/ReasonerAPI/pull/564/changes))

TranslatorReasonerAPI.yaml

@@ -1554,6 +1554,36 @@ components:
           examples:
             - biolink:ChemicalToGeneAssociation
           $ref: '#/components/schemas/BiolinkEntity'
+        knowledge_levels:
+          description: >-
+            The knowledge levels contributing to this meta edge.
+            If provided, this property SHOULD contain all possible
+            knowledge_levels relevant edges might return.
+            (See https://biolink.github.io/biolink-model/KnowledgeLevelEnum/)
+          type: array
+          items:
+            type: string
+          minItems: 1
+        agent_types:
+          description: >-
+            The agent types contributing to this meta edge.
+            If provided, this property SHOULD contain all possible
+            agent_types relevant edges might return.
+            (See https://biolink.github.io/biolink-model/AgentTypeEnum/)
+          type: array
+          items:
+            type: string
+          minItems: 1
+        sources:
+          description: >-
+            The infores CURIEs for sources contributing to this meta edge.
+            If provided, this property SHOULD contain resource_ids for
+            all relevant resource_roles. Services MAY choose to omit
+            their own aggregator resource_ids.
+          type: array
+          items:
+            $ref: '#/components/schemas/CURIE'
+          minItems: 1
       required:
         - subject
         - predicate