code: public final void addAll (final SettingsMap textKeys) {
  
          for (Map.Entry<OperationalTextKey , String> e : textKeys.entrySet()) {
              add(e.getKey(), e.getValue());
          }
  
          isDirty = true;
      }
docs: Add all text parameters of the given <code>textKeys</code> map to this <code>ProtocolDataUnit</code> object.
  
  @param textKeys Map, which contains all the text parameters to insert.