public async Task <IHttpActionResult> RemoveFromRole(string userId, string roleId)
{
var removeResult = await _roleManager.RemoveFromRoleAsync(userId, roleId);
return(removeResult.Succeeded ? Ok() : (IHttpActionResult)NotFound());
}
public async Task RemoveFromRoleAsync(TUser user, string roleId)
{
await Task.FromResult(_userRoleManager.RemoveFromRoleAsync(user, roleId));
}