def get_first_child(self):
        child_keys = self.get_child_keys()
        return self.get_child_node(child_keys[0])
ensures that .java file is not copied into artifacts-dir
dataset/ETHPy150Open AnyMesh/anyMesh-Python/example/urwid/treetools.py/ParentNode.get_first_child--crossover with--dataset/ETHPy150Open Blazemeter/taurus/tests/modules/test_SeleniumExecutor.py/TestSeleniumStuff.test_dont_copy_local_script_to_artifacts