docs: protected boolean isInExportableProject(CmsResource res) {
  
          boolean retValue = true;
          // the "only modified in current project flag" is checked
          if (m_parameters.isInProject()) {
              // resource state is new or changed
              if ((res.getState() == CmsResource.STATE_CHANGED) || (res.getState() == CmsResource.STATE_NEW)) {
                  // the resource belongs not to the current project, so it must not be exported
                  if (!res.getProjectLastModified().equals(getCms().getRequestContext().getCurrentProject().getUuid())) {
                      retValue = false;
                  }
              } else {
                  // state is unchanged, so do not export it
                  retValue = false;
              }
          }
          return retValue;
      }