private ModelProblem hasMissingParentPom( ProjectBuildingException e )
{
if ( e.getCause() instanceof ModelBuildingException )
{
ModelBuildingException mbe = (ModelBuildingException) e.getCause();
for ( ModelProblem problem : mbe.getProblems() )
{
if ( problem.getException() instanceof UnresolvableModelException )
{
return problem;
}