private static void suggestCodeLiterals(@NotNull CompletionResultSet result, PsiElement position) {
    PsiElement parent = position.getParent();
    if (parent instanceof PsiInlineDocTag && !"code".equals(((PsiInlineDocTag)parent).getName())) {
      return;
    }

    if (!result.getPrefixMatcher().getPrefix().isEmpty()) {
      for (String keyword : ContainerUtil.ar("null", "true", "false")) {
        LookupElementBuilder element = LookupElementBuilder.create(keyword);
        result.addElement(parent instanceof PsiInlineDocTag ? element : wrapIntoCodeTag(element));
      }
    }
  }
private static void suggestCodeLiterals(@NotNull CompletionResultSet result, PsiElement position)