class_docstr: Property specified for an Artifact.
code: def mlmd_type(self):
      return Property._ALLOWED_MLMD_TYPES[self.type]
  
imports: import enum
  from ml_metadata.proto import metadata_store_pb2
label_desc: Use image node_id 2 for calling the Property obj's underlying member method code with example usage: obj.mlmd_type() and returns: Property