question: @ NotNull public PsiQuery childrenNamed ( @ NotNull final Class < ? extends PsiNamedElement > clazz , @ NotNull final String name ) { final List < PsiElement > result = new ArrayList < PsiElement > ( ) ; for ( final PsiElement element : myPsiElements ) { for ( final PsiNamedElement child : PsiTreeUtil . findChildrenOfType ( element , clazz ) ) { if ( name . equals ( child . getName ( ) ) ) { result . add ( child ) ; } } } return new PsiQuery ( result . toArray ( new PsiElement [ result . size ( ) ] ) ) ; }
target:  Filter children by name and class