class_docstr: JSON format parser for protocol message.
code: def __init__(self, ignore_unknown_fields, descriptor_pool):
      self.ignore_unknown_fields = ignore_unknown_fields
      self.descriptor_pool = descriptor_pool
  
imports: import base64
  import json
  import math
  from operator import methodcaller
  import re
  import sys
  import six
  from google.protobuf.internal import type_checkers
  from google.protobuf import descriptor
  from google.protobuf import symbol_database
label_desc: Use image node_id 1 to create a new _Parser object from inherited base classes: object with example: obj = _Parser(ignore_unknown_fields, descriptor_pool)