public ICollection <VehiculoCercanoDTO> ListarVehiculosCercanos([FromUri] int idParada, [FromUri] int?idUsuario = null) { try { return(blu.ListarVehiculosCercanos(idParada, idUsuario)); } catch (Exception e) { throw new HttpResponseException(Request.CreateErrorResponse(HttpStatusCode.InternalServerError, e.Message)); } }