parameters: (key: str)
return_statement: return False
docstring: Checks if `key` is a deprecated option and if so, prints a warning.
  
      Returns
      -------
      bool - True if `key` is deprecated, False otherwise.
docstring_summary: Checks if `key` is a deprecated option and if so, prints a warning.
docstring_tokens: Checks if key is a deprecated option and if so prints a warning .
function: def _warn_if_deprecated(key: str) -> bool:
      """
      Checks if `key` is a deprecated option and if so, prints a warning.
  
      Returns
      -------
      bool - True if `key` is deprecated, False otherwise.
      """
      d = _get_deprecated_option(key)
      if d:
          if d.msg:
              print(d.msg)
              warnings.warn(d.msg, FutureWarning)
          else:
              msg = f"'{key}' is deprecated"
              if d.removal_ver:
                  msg += f" and will be removed in {d.removal_ver}"
              if d.rkey:
                  msg += f", please use '{d.rkey}' instead."
              else:
                  msg += ", please refrain from using it."
  
              warnings.warn(msg, FutureWarning)
          return True
      return False
function_tokens: def _warn_if_deprecated ( key : str ) -> bool : d = _get_deprecated_option ( key ) if d : if d . msg : print ( d . msg ) warnings . warn ( d . msg , FutureWarning ) else : msg = f"'{key}' is deprecated" if d . removal_ver : msg += f" and will be removed in {d.removal_ver}" if d . rkey : msg += f", please use '{d.rkey}' instead." else : msg += ", please refrain from using it." warnings . warn ( msg , FutureWarning ) return True return False