code: public void setRelativeTo(String relativeTo) {
  
          m_relativeTo = relativeTo;
          if (CmsStringUtil.isEmptyOrWhitespaceOnly(m_relativeTo)) {
              m_relativeTo = null;
          } else {
              if (!m_relativeTo.startsWith("/")) {
                  m_relativeTo = "/" + m_relativeTo;
              }
              if (!m_relativeTo.endsWith("/")) {
                  m_relativeTo += "/";
              }
          }
      }
docs: Sets the 'relative to' path.<p>
  
  This only affects the generation of the path for the current resource.<p>
  
  @param relativeTo the 'relative to' path to set