parameters: (primary_id, req_seq_num, msg, result=0, rsi_length=0)
return_statement: return b''.join([pack_reply_header(header), msg])
docstring: Take message information and a message and return a construct a buffer
      containing a serialized reply header and message.
docstring_summary: Take message information and a message and return a construct a buffer
      containing a serialized reply header and message.
docstring_tokens: Take message information and a message and return a construct a buffer containing a serialized reply header and message .
function: def pack_reply(primary_id, req_seq_num, msg, result=0, rsi_length=0):
      """
      Take message information and a message and return a construct a buffer
      containing a serialized reply header and message.
      """
  
      header = ReplyHeader(0, primary_id, req_seq_num, result, len(msg), rsi_length)
      return b''.join([pack_reply_header(header), msg])
function_tokens: def pack_reply ( primary_id , req_seq_num , msg , result = 0 , rsi_length = 0 ) : header = ReplyHeader ( 0 , primary_id , req_seq_num , result , len ( msg ) , rsi_length ) return b'' . join ( [ pack_reply_header ( header ) , msg ] )