<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def __set_authoring_nodes(self, source, target):
 """ Sets given editor authoring nodes. :param source: Source file. :type source: unicode :param target: Target file. :type target: unicode """


        editor = self.__script_editor.get_editor(source)
        editor.set_file(target)
        self.__script_editor.model.update_authoring_nodes(editor)