public async Task ReturnListOfAccountsIndexSuccessfuly()
        {
            // Arrange
            GetAccountIndexListQuery query = new GetAccountIndexListQuery();
            // Act
            var result = await handler.Handle(query, CancellationToken.None);

            // Assert
            Assert.IsType <List <AccountIndexView> > (result);
            Assert.True((result as List <AccountIndexView>).Count() > 0);
        }
        public async Task <ActionResult <IEnumerable <AccountIndexView> > > GetAccountIndex([FromQuery] GetAccountIndexListQuery query)
        {
            var index = await _Mediator.Send(query);

            return(Ok(index));
        }