code: def test_Validate(self) -> None:
      self.assertTrue(self.constraint.check({"x": 0, "y": 1}))
      self.assertTrue(self.constraint.check({"x": 1, "y": 1}))
      self.assertFalse(self.constraint.check({"x": 1, "y": 0}))
  
imports: from ax.core.parameter import ChoiceParameter, FixedParameter, ParameterType, RangeParameter
  from ax.core.parameter_constraint import ComparisonOp, OrderConstraint, ParameterConstraint, SumConstraint
  from ax.utils.common.testutils import TestCase
label_desc: Use image node_id 4 for calling the OrderConstraintTest obj's underlying member method code with example usage: obj.test_Validate() without return types