webclient exampe

 https://howtodoinjava.com/spring-webflux/webclient-get-post-example/

Java email send issue

 https://stackoverflow.com/questions/21856211/javax-activation-unsupporteddatatypeexception-no-object-dch-for-mime-type-multi/21898970#21898970

    Thread.currentThread().setContextClassLoader( getClass().getClassLoader() );