code: def MessageByteSize(field_number, message):
      return (
          TagByteSize(field_number)
          + _VarUInt64ByteSizeNoTag(message.ByteSize())
          + message.ByteSize()
      )
  
imports: import struct
  from google.protobuf import descriptor
  from google.protobuf import message
label_desc: Use image node_id 23 for calling a global function with example usage: MessageByteSize(field_number, message) and returns: unknown