@Nullable
  public PsiElement getByName(@NonNls String name) {
    if (myBuiltinsFile != null) {
      final PsiElement element = myBuiltinsFile.getElementNamed(name);
      if (element != null) {
        return element;
      }
    }
    if (myExceptionsFile != null) {
      return myExceptionsFile.getElementNamed(name);
    }
    return null;
  }
@Nullable
  public PsiElement getByName(@NonNls String name)