<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def schema_from_json(self, file_or_path):
 """Takes a file object or file path that contains json that describes a table schema. Returns: List of schema field objects. """

        if isinstance(file_or_path, io.IOBase):
            return self._schema_from_json_file_object(file_or_path)

        with open(file_or_path) as file_obj:
            return self._schema_from_json_file_object(file_obj)