boolean (@NotNull PsiClass containingClass, @NotNull PsiMethodReferenceExpression reference) { PsiClass gContainingClass = containingClass.getContainingClass(); if (gContainingClass == null || !containingClass.hasModifierProperty(PsiModifier.STATIC)) { PsiClass aClass = null; if (PsiTreeUtil.isAncestor(gContainingClass != null ? gContainingClass : containingClass, reference, false)) { aClass = gContainingClass != null ? gContainingClass : containingClass; } return PsiUtil.getEnclosingStaticElement(reference, aClass) != null; } return false; }