code: def testLiteralSerialization(self):
      literal_bool = default_types.Literal(True)
      literal_int = default_types.Literal(1)
      literal_float = default_types.Literal(1.2)
      literal_str = default_types.Literal("a")
      literal_none = default_types.Literal(None)
  
      self.assertEqual(str(literal_bool), "Literal[True]")
      self.assertEqual(
          serialization.deserialize(
              serialization.serialize(literal_bool)
          ),
          literal_bool,
      )
      self.assertEqual(
          serialization.deserialize(
              serialization.serialize(literal_int)
          ),
          literal_int,
      )
      self.assertEqual(
          serialization.deserialize(
              serialization.serialize(literal_float)
          ),
          literal_float,
      )
      self.assertEqual(
          serialization.deserialize(
              serialization.serialize(literal_str)
          ),
          literal_str,
      )
      self.assertEqual(
          serialization.deserialize(
              serialization.serialize(literal_none)
          ),
          literal_none,
      )
  
imports: import collections
  from tensorflow.core.function.trace_type import default_types
  from tensorflow.core.function.trace_type import serialization
  from tensorflow.python.platform import test
  from tensorflow.python.types import trace
label_desc: Use image node_id 3 for calling the DefaultTypesTest obj's underlying member method code with example usage: obj.testLiteralSerialization() without return types