class_docstr: Represents a parameter to a function.
docstr: If this parameter might not be supplied for a call.
docstr_tok: ["If","this","parameter","might","not","be","supplied","for","a","call","."]
code: def optional(self) -> bool:
      """If this parameter might not be supplied for a call."""
      return self.default is not self.empty
  
imports: import collections
  import inspect
  from typing import Any, Callable, Dict, List, Mapping, Optional, Sequence, Tuple
  from absl import logging
  from tensorflow.core.function import trace_type
  from tensorflow.core.function.polymorphism import function_type_pb2
  from tensorflow.core.function.trace_type import serialization
  from tensorflow.python.types import core
  from tensorflow.python.types import trace
label_desc: Use image node_id 4 for calling the Parameter obj's underlying member method code with example usage: obj.optional() and returns: unknown