How to use the run-sequence.apply function in run-sequence

gulp.task(task.name, function(cb) {
    	var cwd = process.cwd();
        var _args = args.slice();
        _args.push(function() {
        	// restore current working directory (see #23)
        	process.chdir(cwd);
        	cb.apply(null, arguments);
        });
        runSequence.apply(null, _args);
    });
};

gulp.task('all', ['clean'], function (cb) {
  var tasks = Object.keys(this.tasks).filter(function (k) { return /^test\d+/.test(k) });
  tasks.sort(function (a, b) { return a.match(/\d+/)[0] - b.match(/\d+/)[0] });
  tasks.push(cb);
  sequence.apply(null, tasks);
});

});

    gulp.task('watch:kss', function() {
      return gulp.watch(argv.kssSource, ['styleguide:generate']);
    });

    gulp.task('watch:styles', function() {
      return gulp.watch(argv.styleSource, ['styleguide:applystyles']);
    });

    if (argv.watch) {
      tasks.push('watch:styles');
      tasks.push('watch:kss');
    }

    runSequence.apply(this, tasks);

  } catch (err) {
    console.error('Style guide generation failed');
    logError(err);
  }

};

});

    gulp.task('watch:kss', function() {
      return gulp.watch(argv.kssSource, ['styleguide:generate']);
    });

    gulp.task('watch:styles', function() {
      return gulp.watch(argv.styleSource, ['styleguide:applystyles']);
    });

    if (argv.watch) {
      tasks.push('watch:styles');
      tasks.push('watch:kss');
    }

    runSequence.apply(this, tasks);

  } catch (err) {
    console.error('Style guide generation failed');
    logError(err);
  }

};

gulp.task('build', ['clean'], function (cb) {
    var task_seq = [['style', 'image', 'html', 'script'], cb];
    runSequence.apply(null, task_seq);
});

gulp.task('build', ['clean'], function (cb) {
    var task_seq = [['style', 'image', 'html', 'script'], cb];
    runSequence.apply(null, task_seq);
});

gulp.task('default', function (cb) {
    var task_seq = ['build'];
    if (yargs.s) {
        task_seq.push('server');
    }
    if (yargs.w) {
        task_seq.push('watch');
    }
    task_seq.push(cb);
    runSequence.apply(null, task_seq);
});

gulp.task('build', ['clean'], function (cb) {
    var task_seq = [['style', 'image', 'html', 'script'], cb];
    if (yargs.r) {
        task_seq = [['style', 'image', 'html', 'script'], 'rev', 'inline', cb];
    }
    runSequence.apply(null, task_seq);
});

gulp.task('build', function(callback) {
    var args = ['clean', ['css', 'content', 'js', 'html']]
    if (env == 'stage' || env == 'prod') args.unshift('lint')
    if (cordova) args.push('cordova')
    args.push(callback)
    sequence.apply(null, args)
})

gulp.task("test_output_pjs", function(callback) {
    var sequence = pjs_tests.map(function(test) {
        return "test_output_pjs_" + test;
    });
    sequence.push(callback);
    runSequence.apply(null, sequence);
});