I just want to know how the REST API /jira_server/rest/zapi/latest/test/count , does its work in the back end) . This REST API results in retrieving all the Test issue types , under the given project and a specific version Id . Even if i rename the Test attribute name to some random name , it still works . How is it identifying , even the name is changed ? I hope it internally uses the Test issue id to retrieve the issues. But still , i really want to know , how it is achieved ?? How this REST API works ?