code: private boolean isBlockingLocked() {
  
          boolean result = true;
          CmsLockFilter blockingFilter = CmsLockFilter.FILTER_ALL;
          blockingFilter = blockingFilter.filterNotLockableByUser(getCms().getRequestContext().getCurrentUser());
          try {
              List<String> blocking = getCms().getLockedResources(getParamResource(), blockingFilter);
              result = blocking.size() > 0;
          } catch (CmsException e) {
              if (LOG.isDebugEnabled()) {
                  LOG.debug(e.getLocalizedMessage(), e);
              }
          }
          return result;
      }
docs: Returns if the requested resource if blocking locked.<p>
  
  @return <code>true</code> if the resource is blocking locked