def find_transitionid_by_name(self, issue, transition_name):
        """Get a transitionid available on the specified issue to the current user.

        Look at https://developer.atlassian.com/static/rest/jira/6.1.html#d2e1074 for json reference

        :param issue: ID or key of the issue to get the transitions from
        :param trans_name: iname of transition we are looking for
        """
        transitions_json = self.transitions(issue)
        id = None

        for transition in transitions_json:
            if transition["name"].lower() == transition_name.lower():
                id = transition["id"]
                break
        return id