code: @GwtIncompatible("incompatible method")
      public ToStringBuilder append(final String fieldName, final Object obj, final boolean fullDetail) {
          style.append(buffer, fieldName, obj, Boolean.valueOf(fullDetail));
          return this;
      }
docs: <p>Append to the <code>toString</code> an <code>Object</code>
  value.</p>
  
  @param fieldName  the field name
  @param obj  the value to add to the <code>toString</code>
  @param fullDetail  <code>true</code> for detail,
  <code>false</code> for summary info
  @return this