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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _register_json_primitive(object_type, encoder, decoder):
 """Extend what Pipeline can serialize. Args: object_type: type of the object. encoder: a function that takes in an object and returns a dict of json primitives. decoder: inverse function of encoder. """

  global _TYPE_TO_ENCODER
  global _TYPE_NAME_TO_DECODER
  if object_type not in _TYPE_TO_ENCODER:
    _TYPE_TO_ENCODER[object_type] = encoder
    _TYPE_NAME_TO_DECODER[object_type.__name__] = decoder