@Override
  public @Nullable LeafElement createLeaf(@NotNull IElementType type, @NotNull CharSequence text) {
    if (type == PlainTextTokenTypes.PLAIN_TEXT) {
      return new PsiPlainTextImpl(text);
    }
    return null;
  }
@Override
  public @Nullable LeafElement createLeaf(@NotNull IElementType type, @NotNull CharSequence text)