def get_parent(self):
        if self.path == '/':
            return None
        return self.tree.get(posixpath.dirname(self.path))
Replace instances of the given dummy variables with explicit dummy
dataset/ETHPy150Open lektor/lektor/lektor/db.py/TreeItem.get_parent--crossover with--dataset/ETHPy150Open sympy/sympy/sympy/concrete/expr_with_limits.py/ExprWithLimits.as_dummy