code: private AbstractNode findNodeByUuid(final SecurityContext securityContext, final String uuid) throws FrameworkException {
  
  		if (!uuid.isEmpty()) {
  
  			logger.debug("Requested id: {}", uuid);
  
  			return (AbstractNode) StructrApp.getInstance(securityContext).getNodeById(uuid);
  		}
  
  		return null;
  	}
docs: Find node by uuid
  
  @param securityContext
  @param request
  @param uuid
  @return node
  @throws FrameworkException