docs: def __git_add(args=''):
          """
          Add files to staging.
          The function call will return 0 if the command success.
          """
          command = ['git', 'add', '.']
          Shell.msg('Adding files...')
  
          if APISettings.DEBUG:
              Git.__debug(command, True)
  
          for key in args:
              command.append(key)
          if not call(command):
              pass
          return False