Creates a new task.

            `env`
                Runtime ``Environment`` instance.
            `args`
                Arguments object from arg parser.

def execute(self, env, args):
        """ Creates a new task.

            `env`
                Runtime ``Environment`` instance.
            `args`
                Arguments object from arg parser.
            """

        task_name = args.task_name
        clone_task = args.clone_task

        if not env.task.create(task_name, clone_task):
            raise errors.FocusError(u'Could not create task "{0}"'
                                    .format(task_name))

        # open in task config in editor
        if not args.skip_edit:
            task_config = env.task.get_config_path(task_name)

            if not _edit_task_config(env, task_config, confirm=True):
                raise errors.FocusError(u'Could not open task config: {0}'
                                        .format(task_config))