def resolveAttribute(self, ref):
        assert isinstance(ref, expression.AttributeRef), ref
        return self.scheme().resolve(ref)
merge parameters - parameters passed directly to execution request
dataset/ETHPy150Open uwescience/raco/raco/algebra.py/Operator.resolveAttribute--crossover with--dataset/ETHPy150Open cloudify-cosmo/cloudify-manager/rest-service/manager_rest/blueprints_manager.py/BlueprintsManager._merge_and_validate_execution_parameters