public async Task <bool> DeleteAsync(string collectorId, CancellationToken token = default)
{
var collector = (
from u in _userManager.Users
where u.Roles.Contains("Collector") && u.UserName == collectorId
select u).FirstOrDefault();
if (collector == null)
{
return(false);
}
await _minerService.DeleteByCollectorAsync(collectorId, token);
await _userManager.DeleteAsync(collector);
return(true);
}