code: def print_stderr(self, always_print=False):
          
          if self.__stderr or always_print:
              self.__echo.critical("--{ STDERR }---" + "-" * 100)
              self.__format_lines_error(self.stderr)
              self.__echo.critical("---------------" + "-" * 100)
docs: Prints the stderr to console - if there is any stdout, otherwise does nothing.
          :param always_print:   print the stderr, even if there is nothing in the buffer (default: false)