code: def PackTag(field_number, wire_type):
      """Returns an unsigned 32-bit integer that encodes the field number and
      wire type information in standard protocol message wire format.
  
      Args:
        field_number: Expected to be an integer in the range [1, 1 << 29)
        wire_type: One of the WIRETYPE_* constants.
      """
      if not 0 <= wire_type <= _WIRETYPE_MAX:
          raise message.EncodeError("Unknown wire type: %d" % wire_type)
      return (field_number << TAG_TYPE_BITS) | wire_type
  
imports: import struct
  from google.protobuf import descriptor
  from google.protobuf import message
label_desc: Use image node_id 1 for calling a global function with example usage: PackTag(field_number, wire_type) and returns: unknown