Create an object of type Choice1 having the default value. Use the optionally specified basicAllocator to supply memory. If basicAllocator is 0, the currently installed default allocator is used.
Choice1
basicAllocator
Declared in <balb_testmessages.h>
<balb_testmessages.h>
explicit Choice1(bslma::Allocator* basicAllocator = 0);