public async Task <IActionResult> ChangePasswordAsync([FromBody] ChangePasswordDto input)
{
// Act.
if (!await _signInService.CheckPasswordAsync(_appContext.UserId, input.OldPassword))
{
throw new InvalidCredentialException();
}
await _signInService.SetPasswordAsync(_appContext.UserId, input.NewPassword);
// Return.
return(NoContent());
}