code: public String getStyleSiblings() {
  
          StringBuffer style = new StringBuffer(128);
          if (m_resource.getSiblingCount() > 1) {
              style.append("background-image:url(");
              style.append(CmsWorkplace.getSkinUri());
              style.append(getIconPathResourceType());
              style.append("); background-position: 0px 0px; background-repeat: no-repeat; ");
          }
          return style.toString();
      }
docs: Returns additional style sheets for the resource type icon depending on siblings.<p>
  
  That is, depending on {@link CmsResource#getSiblingCount()}
  
  Use it with the {@link #getIconPathExplorer} method.<p>
  
  @return additional style sheets depending on siblings