From the doc "docs.vmware.com...52590ADCCF.html", I could find machine and software components examples with respect to binding properties, but I didn't get necessary information on XaaS blueprint binding. I need to create a composite blueprint with two XaaS blueprints, one with an output and another one with an input. But, I couldn't find a way to associate the output of one with the input of the other. How to achieve this?