code: private ToStringBuilder appendFormattedValue(String name, Object value) {
  		if (!first) {
  			sb.append(SEPARATOR);
  		}
  
  		sb.append(name).append(FIELD_VALUE_SEPARATOR).append(value);
  		first = false;
  		return this;
  	}
docs: Append formatted value to the final output.
  @param name Field name.
  @param value Field value.
  @return The current builder.