public static boolean isInitializedNotNull(PsiField field) {
    PsiClass containingClass = field.getContainingClass();
    if (containingClass == null) return false;

    boolean staticField = field.hasModifierProperty(PsiModifier.STATIC);
    for (PsiClassInitializer initializer : containingClass.getInitializers()) {
      if (initializer.getLanguage().isKindOf(JavaLanguage.INSTANCE) &&
          initializer.hasModifierProperty(PsiModifier.STATIC) == staticField &&
          getBlockNotNullFields(initializer.getBody()).contains(field)) {
        return true;
      }
    }
    if (staticField) return false;

    PsiMethod[] constructors = containingClass.getConstructors();
    if (constructors.length == 0) return false;

    for (PsiMethod method : constructors) {
      if (!method.getLanguage().isKindOf(JavaLanguage.INSTANCE) ||
          !getBlockNotNullFields(method.getBody()).contains(field)) {
        return false;
      }
    }
    return true;
  }
public static boolean isInitializedNotNull(PsiField field)