public static async Task<UserListDetailedCursored> GetMembersOnList(this IUserSession session, long listId, string slug,
string ownerScreenName = "", long ownerId = 0, long cursor = -1)
{
var parameters = new TwitterParametersCollection();
parameters.Create(list_id: listId, slug: slug, owner_id: ownerId, owner_screen_name: ownerScreenName, skip_status: true, include_entities: true, cursor:cursor);
return await session.GetAsync(TwitterApi.Resolve("/1.1/lists/members.json"), parameters)
.ContinueWith(c => c.MapToSingle<UserListDetailedCursored>());
}