code: public void printTo(StringBuffer buf, ReadablePartial partial) {
          try {
              printTo((Appendable) buf, partial);
          } catch (IOException ex) {
              // StringBuffer does not throw IOException
          }
      }
docs: Prints a ReadablePartial.
  <p>
  Neither the override chronology nor the override zone are used
  by this method.
  
  @param buf  the destination to format to, not null
  @param partial  partial to format