def up_(self, rev): return MigrationStep.upgrade_from_script(self.env.revision_map, rev)
def down_(self, rev): return MigrationStep.downgrade_from_script( self.env.revision_map, rev)
def down_(self, rev): return MigrationStep.downgrade_from_script(self.env.revision_map, rev)
def up_(self, rev): return MigrationStep.upgrade_from_script( self.env.revision_map, rev)