code: public void insertMentionWithoutToken(@NonNull Mentionable mention) {
          // Setup variables and ensure they are valid
          Editable text = getEditableText();
          int index = getSelectionStart();
          index = index > 0 ? index : 0;
  
          insertMentionInternal(mention, text, index, index);
      }
docs: Inserts a mention. This will not take any token into consideration. This method is useful
  when you want to insert a mention which doesn't have a token.
  
  @param mention {@link Mentionable} to insert a span for