How can i find the list of processes or taskid or tasks through REST calls .

Summary

How can i find the list of processes or taskid or tasks through REST calls .

Content

I tried to use the below rest calls to get the processes/tasks. But I am getting the count as 0. I have deployed the application as well but still not able to find any response in the get calls.

 

bpm/api/4.0/processes

 

bpm/api/4.0/tasks

 

I have a form which starts the process, I need to use rest calls to send the values to the process so as to initiate.How do I see the payload information.