I want to use other criteria (methods) of TaskQuery with "task-variable existence" criterion. For example: <java> taskQuery.taskAssignee("assignee")…taskVariableExists("var").list(); </java> Is it possible with native task query? Ok, i will create a JIRA issue.
It's currently not planned, so no expectations set. The true cheesy open source answer is that we of course welcome pull requests with an enormous enthusiasm 😉