libsbmlcs.Model.createModifier C# (CSharp) Method

        public ModifierSpeciesReference createModifier()
        {
            IntPtr cPtr = libsbmlPINVOKE.Model_createModifier(swigCPtr);
            ModifierSpeciesReference ret = (cPtr == IntPtr.Zero) ? null : new ModifierSpeciesReference(cPtr, false);
            return ret;
        }

 public void test_SpeciesReference_Modifier_ancestor_create_model()
 {
     Model m = new Model(2,4);
       Reaction r = m.createReaction();
       ModifierSpeciesReference sr = m.createModifier();
       ListOf lo = r.getListOfModifiers();
       assertTrue( sr.getAncestorOfType(libsbml.SBML_REACTION) == r );
       assertTrue( sr.getAncestorOfType(libsbml.SBML_LIST_OF) == lo );
       assertTrue( sr.getAncestorOfType(libsbml.SBML_MODEL) == m );
       assertTrue( sr.getAncestorOfType(libsbml.SBML_DOCUMENT) == null );
       assertTrue( sr.getAncestorOfType(libsbml.SBML_COMPARTMENT) == null );
       ModifierSpeciesReference obj = r.getModifier(0);
       assertTrue( obj.getAncestorOfType(libsbml.SBML_REACTION) == r );
       assertTrue( obj.getAncestorOfType(libsbml.SBML_LIST_OF) == lo );
       assertTrue( obj.getAncestorOfType(libsbml.SBML_MODEL) == m );
       assertTrue( obj.getAncestorOfType(libsbml.SBML_DOCUMENT) == null );
       assertTrue( obj.getAncestorOfType(libsbml.SBML_COMPARTMENT) == null );
 }