GetAttributeByNameInEntityDefinition retrieves an `AttributeDefinition` from an `EntityDefinition` by its name.

GetEntityByName retrieves an `EntityDefinition` from a `SchemaDefinition` by its name.

GetPermissionByNameInEntityDefinition retrieves an `PermissionDefinition` from an `EntityDefinition` by its name.

GetRelationByNameInEntityDefinition retrieves a `RelationDefinition` from an `EntityDefinition` by its name.

GetRuleByName retrieves the rule definition from the given schema by its name.

GetTypeOfReferenceByNameInEntityDefinition retrieves the type of reference in an `EntityDefinition` by its name.

IsDirectlyRelated checks if a source `RelationReference` is directly related to a target `RelationDefinition`.

NewLinkedGraph returns a new instance of LinkedSchemaGraph with the specified base.SchemaDefinition as its schema.

NewSchemaFromEntityAndRuleDefinitions creates a new base.SchemaDefinition from entity and rule definitions.

NewSchemaFromStringDefinitions creates a new `SchemaDefinition` from a list of string definitions.

NewWalker is a constructor for the Walker struct.

LinkedEntrance represents an entry point into the LinkedSchemaGraph, which is used to resolve permissions and expand user sets for a given request.

LinkedSchemaGraph represents a graph of linked schema objects.

Walker is a struct used for traversing a schema.

LinkedEntranceKind is a string type that represents the kind of LinkedEntrance object.