When overridden in a derived class, consumes a message previously offered by this ISource block and successfully reserved by the target, transferring ownership to the caller.
virtual message<_Type> * consume(
ITarget<_Type> * _PTarget
) = 0;
The runtime_object_identity of the reserved message object.
A pointer to the target block that is calling the consume method.
A pointer to the message object that the caller now has ownership of.
The consume method is similar to accept, but must always be preceded by a call to reserve that returned true.