When overridden in a derived class, links a specified source block to this ITarget block.
virtual void link_source(
_Inout_ ISource<_Type> * _PSource
) = 0;
The ISource block being linked to this ITarget block.
This function should not be called directly on an ITarget block. Blocks should be connected together using the link_target method on ISource blocks, which will invoke the link_source method on the corresponding target.