public static Collection<String> findSameFileInheritors(@NotNull PsiClass psiClass, PsiClass @NotNull ... classesToExclude) {
    return getClasses(psiClass, PsiClass::getQualifiedName, classesToExclude);
  }
public static Collection<String> findSameFileInheritors(@NotNull PsiClass psiClass, PsiClass @NotNull ... classesToExclude)