Thymeleaf Session Info

			${session.foo}	// Retrieves the session atttribute 'foo'
			${session.size()}
			${session.isEmpty()}
			${session.containsKey('foo')}
		

Thymeleaf Principal Info

			${#authentication.principal}
		

Thymeleaf Session ID

			Should Null Check ${#ctx.httpSession}
			Then ${#ctx.httpSession.id}