IResolvedQualifiersReference hostComponentRef = ReferenceFactory.packageQualifiedReference(project.getWorkspace(), hostComponentClassName);
ICompilationUnit referencingCU = project.getScope().getCompilationUnitForDefinition(this);
IDefinition hostComponentDef = hostComponentRef.resolve(project, referencingCU, SIGNATURE);
if (!(hostComponentDef instanceof IClassDefinition))
{
ICompilerProblem problem = new HostComponentClassNotFoundProblem(metaTags[0], hostComponentClassName);
problems.add(problem);
// without a host component class definition, there aren't any more checks we
// can do, so just bail out.
return;
}