code: def testInvalidFloatValue(self):
      self.CheckError(
          '{"floatValue": "nan"}',
          "Failed to parse floatValue field: Couldn't "
          'parse float "nan", use "NaN" instead.',
      )
  
imports: import json
  import math
  import sys
  from google.protobuf import any_pb2
  from google.protobuf import duration_pb2
  from google.protobuf import field_mask_pb2
  from google.protobuf import struct_pb2
  from google.protobuf import timestamp_pb2
  from google.protobuf import wrappers_pb2
  from google.protobuf.internal import well_known_types
  from google.protobuf import json_format
  from google.protobuf.util import json_format_proto3_pb2
label_desc: Use image node_id 28 for calling the JsonFormatTest obj's underlying member method code with example usage: obj.testInvalidFloatValue() without return types