code: def TagBytes(field_number, wire_type):
      """Encode the given tag and return the bytes.  Only called at startup."""
  
      return _VarintBytes(wire_format.PackTag(field_number, wire_type))
  
imports: import struct
  import six
  from google.protobuf.internal import wire_format
label_desc: Use image node_id 16 for calling a global function with example usage: TagBytes(field_number, wire_type) and returns: _VarintBytes