When overridden in a derived class, unlinks a specified source block from this ITarget block.
virtual void unlink_source(
ISource<_Type> * _PSource
) = 0;
The ISource block being unlinked from this ITarget block.
This function should not be called directly on an ITarget block. Blocks should be disconnected using the unlink_target or unlink_targets methods on ISource blocks, which will invoke the unlink_source method on the corresponding target.