def _ref_exists(self):
        self._collect_soft_chain()

        found_ref = False
        for node in self.nodes:
            if node.id == self.ref:
                self.file = os.path.join(Constants.ALTER_DIR, node.filename)
                found_ref = True
                break

        return found_ref
Run this :class:`Command`.
dataset/ETHPy150Open appnexus/schema-tool/schematool/command/resolve.py/ResolveCommand._ref_exists--crossover with--dataset/ETHPy150Open quantmind/lux/lux/core/commands/__init__.py/LuxCommand.run