code: protected void addWidget(CmsWidgetDialogParameter param) {
  
          if (m_widgets == null) {
              m_widgets = new ArrayList<CmsWidgetDialogParameter>();
          }
          param.setKeyPrefix(m_prefix);
          m_widgets.add(param);
      }
docs: Adds a new widget parameter definition to the list of all widgets of this dialog.<p>
  
  @param param the widget parameter definition to add