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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 walk_target_deps_topological_order(self, target: Target):
 """Generate all dependencies of `target` by topological sort order."""

        all_deps = get_descendants(self.target_graph, target.name)
        for dep_name in topological_sort(self.target_graph):
            if dep_name in all_deps:
                yield self.targets[dep_name]