private void processMemberType( final PsiElement element, final TypeParameterSearcher parameterSearcher, final PsiClass psiClass, final PsiSubstitutor substitutor, final Map<PsiElement, Pair<PsiReference[], PsiType>> roots) { final PsiType elementType = TypeMigrationLabeler.getElementType(element); if (elementType != null && elementType.accept(parameterSearcher).booleanValue()) { final PsiType memberType = substitutor.substitute(elementType); prepareMethodsChangeSignature(psiClass, element, memberType); final List<PsiReference> refs = TypeMigrationLabeler.filterReferences( psiClass, ReferencesSearch.search(element, psiClass.getUseScope())); roots.put( element, Pair.create( myLabeler.markRootUsages( element, memberType, refs.toArray(new PsiReference[refs.size()])), memberType)); } }