code: private static String getRemovePrefixRegex() {
  
          if (m_removePrefixRegex == null) {
              m_removePrefixRegex = "^("
                  + OpenCms.getStaticExportManager().getVfsPrefix()
                  + ")?"
                  + STATIC_RESOURCE_PREFIX
                  + "(/v-?\\d+v/)?";
          }
          return m_removePrefixRegex;
      }
docs: Returns the regular expression to remove the static resource path prefix.<p>
  
  @return the regular expression to remove the static resource path prefix