public override int CompareTo(object obj)
{
Task <TContext> item = obj as Task <TContext>;
if (item == null)
{
return(-1);
}
int result = m_next_execution_time.CompareTo(item.m_next_execution_time);
if (result != 0)
{
return(result);
}
else
{
return(_insertion_index - item._insertion_index);
}
}