public static Set<PsiMethod> getDelegatingMethodsForField(PsiField field) {
    final Set<PsiMethod> out = new HashSet<>();
    final PsiClass containingClass = field.getContainingClass();
    if (containingClass == null) {
      return out;
    }
    final PsiMethod[] methods = containingClass.getMethods();
    for (PsiMethod method : methods) {
      if (isDelegation(field, method)) {
        out.add(method);
      }
    }
    return out;
  }
public static Set<PsiMethod> getDelegatingMethodsForField(PsiField field)