code: protected void appendSequence(final CharSequence sequence, final String name) {
          if (Strings.isNotEmpty(sequence)) {
              queueCurrentSequence();
              setCurrentSequence(new CharSequenceEntry(sequence, name));
          }
      }
docs: Actual appending method, referenced by all others.
  
  @param sequence should be appended to the reader and set as currently parsed sequence.
  @param name name of the template for debugging purposes.