code: def _ext_function(spark: SparkSession, f: object) -> object:
      warnings.warn(
          "Extensions may be removed in the future versions of quinn. Please use explicit functions instead",
          category=DeprecationWarning,
          stacklevel=2,
      )
      return f(spark)
  
label_desc: Use image node_id 1 for calling a global function with example usage: _ext_function(spark, f) and returns: f