The Reference enum helps distinguish whether a name corresponds to an entity or a rule. - REFERENCE_UNSPECIFIED: Default, unspecified reference. - REFERENCE_ENTITY: Indicates that the name refers to an entity. - REFERENCE_RULE: Indicates that the name refers to a rule.
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REFERENCE_UNSPECIFIED(value:'REFERENCE_UNSPECIFIED') -
REFERENCE_ENTITY(value:'REFERENCE_ENTITY') -
REFERENCE_RULE(value:'REFERENCE_RULE')