code: protected void addRelationNode(Element relationsElement, String structureId, String sitePath, String relationType) {
  
          if ((structureId != null) && (sitePath != null) && (relationType != null)) {
              Element relationElement = relationsElement.addElement(CmsImportVersion10.N_RELATION);
  
              relationElement.addElement(CmsImportVersion10.N_ID).addText(structureId);
              relationElement.addElement(CmsImportVersion10.N_PATH).addText(sitePath);
              relationElement.addElement(CmsImportVersion10.N_TYPE).addText(relationType);
          }
      }
docs: Adds a relation node to the <code>manifest.xml</code>.<p>
  
  @param relationsElement the parent element to append the node to
  @param structureId the structure id of the target relation
  @param sitePath the site path of the target relation
  @param relationType the type of the relation