code: public ToStringBuilder append(String name, Map<?, ?> map) {
  		StringBuilder sb = new StringBuilder(START_OBJ);
  		for (Map.Entry<?, ?> entry : map.entrySet()) {
  			sb.append(entry.getKey()).append(FIELD_VALUE_SEPARATOR).append(formatValue(entry.getValue()));
  		}
  
  		sb.append(END_OBJ);
  
  		return appendFormattedValue(name, sb.toString());
  	}
docs: Append new map value.
  
  @param name The name of the field.
  @param map The map.
  @return The current builder (for chaining).