How to write VISIBILITY if-else condition in ANGULARJS?

How to Write Condition on data which is fetching from Json to Angularjs?

Example : if user FIRM NAME exists Show else if user FULL NAME exists Show else Show REALNAME

I have a working Example of fetching data

at line number 25 <h3 class="moduletitle">Name : {{ module.realname }}</h3>

Please See that in PLUNKER

I hope i will get the working code update along with PLUNKER