class_docstr: Coder which doesn't prefix the length of the encoded object as the length prefix will be handled
  by the wrapped value coder.
code: def __init__(self, value_coder):
      super(PassThroughLengthPrefixCoder, self).__init__(value_coder)
  
imports: from apache_beam.coders import Coder
  from apache_beam.coders.coders import FastCoder, LengthPrefixCoder
  from apache_beam.portability import common_urns
  from apache_beam.typehints import typehints
  from pyflink import fn_execution
  from pyflink.fn_execution.coders import LengthPrefixBaseCoder
  from pyflink.fn_execution.flink_fn_execution_pb2 import CoderInfoDescriptor
label_desc: Use image node_id 1 to create a new PassThroughLengthPrefixCoder object from inherited base classes: LengthPrefixCoder with example: obj = PassThroughLengthPrefixCoder(value_coder)