public bool hasUnknownPackage(string pkgURI) { bool ret = libsbmlPINVOKE.SBMLDocument_hasUnknownPackage(swigCPtr, pkgURI); if (libsbmlPINVOKE.SWIGPendingException.Pending) throw libsbmlPINVOKE.SWIGPendingException.Retrieve(); return ret; }