code: public static JAXBContext get(final String contextPath) {
  		Assert.hasText(contextPath, "contextPath is required");
  		JAXBContext ctx = jaxbContexts.get(contextPath);
  		if (ctx == null) {
  			try {
  				ctx = JAXBContext.newInstance(contextPath);
  			} catch (final JAXBException e) {
  				throw new IllegalArgumentException("Failed to create JAXBContext - invalid JAXB context path: " + contextPath, e);
  			}
  			jaxbContexts.put(contextPath, ctx);
  			LoggerFactory.getLogger(JAXBContextCache.class).info("cached : {}", contextPath);
  		}
  		return ctx;
  	}
docs: If the JAXBContext is not cached, then it will create a new instance and cache it.
  
  @param contextPath
  REQUIRED
  @return