private async Task <EmailResponse> ForgotMainPassword(IdentityUser user)
{
//gerar JWT para reset de senha
var code = await _userManager.GeneratePasswordResetTokenAsync(user);
//criar link para retorno
var callbackUrl = Url.ResetPasswordCallbackLink(user.Id, HttpUtility.UrlEncode(code), Request.Scheme);
//método de extensão de URL
return(await _emailServices.SendEmailBySmtpAsync(user.Email, "Reset Password", callbackUrl));
}