SqlMapper.GridReader.IsConsumed should return true if stored procedure does not return any recordsets

SqlMapper.GridReader.IsConsumed should return true if stored procedure does not return any recordsets. This can happen e.g. when stored procedure executes a select in a loop, and number of loop iterations depends on passed arguments. If there were zero iterations, stored procedure will return no recordsets, and the loop like below will throw an exception "No columns were selected" when calling GridReader.Read():

SqlMapper.GridReader gridReader = connection.QueryMultiple(...);
while (!gridReader.IsConsumed)
{
	//do something with gridReader.Read();
}

Start at the SqlMapper.GridReader.IsConsumed entry point and trace how QueryMultiple represents a stored procedure that returns no recordsets. Compare that state with the GridReader.Read() call in the example, then add coverage showing that the loop exits without the "No columns were selected" exception; no file or test path is named in the issue.