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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def src_paths_changed(self):
 """ See base class docstring. """


        # Get the diff dictionary
        diff_dict = self._git_diff()

        # Return the changed file paths (dict keys)
        # in alphabetical order
        return sorted(diff_dict.keys(), key=lambda x: x.lower())