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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 get_dependencies(self):
 """ Retrieve the set of all dependencies for a given configuration. Returns: utils.utils.OrderedSet: The set of all dependencies for the tracked configuration. """

        all_deps = OrderedSet()
        for key, _ in list(self.__config.items()):
            if key in self.__cli:
                continue

            if key.endswith('sources'):
                all_deps |= self.get_sources(key[:len('sources') * -1 - 1])

        for key, _ in list(self.__cli.items()):
            if key.endswith('sources'):
                all_deps |= self.get_sources(key[:len('sources') * -1 - 1])

        if self.conf_file is not None:
            all_deps.add(self.conf_file)

        all_deps.add(self.get_path("sitemap", rel_to_cwd=True))

        cwd = os.getcwd()
        return [os.path.relpath(fname, cwd) for fname in all_deps if fname]