code: public void append(final StringBuffer buffer, final String fieldName, final long value) {
          appendFieldStart(buffer, fieldName);
          appendDetail(buffer, fieldName, value);
          appendFieldEnd(buffer, fieldName);
      }
docs: <p>Append to the <code>toString</code> a <code>long</code>
  value.</p>
  
  @param buffer  the <code>StringBuffer</code> to populate
  @param fieldName  the field name
  @param value  the value to add to the <code>toString</code>