Consumes a message previously offered by this choice messaging block and successfully reserved by the target, transferring ownership to the caller.
virtual message<size_t> * consume(
_Inout_ ITarget<size_t> * _PTarget
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.