@Nullable
  private static Boolean computeJavaLangBooleanFieldReference(final PsiVariable variable) {
    if (!(variable instanceof PsiField)) return null;
    PsiClass psiClass = ((PsiField)variable).getContainingClass();
    if (psiClass == null || !CommonClassNames.JAVA_LANG_BOOLEAN.equals(psiClass.getQualifiedName())) return null;
    @NonNls String name = variable.getName();
    return "TRUE".equals(name) ? Boolean.TRUE : "FALSE".equals(name) ? Boolean.FALSE : null;
  }
@Nullable
  private static Boolean computeJavaLangBooleanFieldReference(final PsiVariable variable)