def is_root(self):
            return not self.parent
Revert a schema creation
dataset/ETHPy150Open mikhaildubov/AST-text-analysis/east/asts/ast.py/AnnotatedSuffixTree.Node.is_root--crossover with--dataset/ETHPy150Open perseas/Pyrseas/tests/dbobject/test_schema.py/SchemaUndoSqlTestCase.test_undo_create_schema