code: AmqpClient closeConnection(int replyCode, String replyText, int classId, int methodId1) {
          this.closeConnection(replyCode, replyText, classId, methodId1, null, null);
          return this;
      }
docs: Closes the Amqp Server connection.
  
  @param replyCode
  @param replyText
  @param classId
  @param methodId1
  @return AmqpClient