libsbml.SBMLDocument.getModel C# (CSharp) Method

        public new Model getModel()
        {
            IntPtr cPtr = libsbmlPINVOKE.SBMLDocument_getModel__SWIG_0(swigCPtr);
            Model ret = (cPtr == IntPtr.Zero) ? null : new Model(cPtr, false);
            return ret;
        }

 public void setUp()
 {
     string filename = "../../annotation/test/test-data/annotationL3.xml";
       d = libsbml.readSBML(filename);
       m = d.getModel();
       c = m.getCompartment(0);
 }