There is a comment above IsCancelled that says when it is ok to use this.

In some cases, the prototype argument order was different
than the declaration order.

Based on a patch from Sam Leffler.

Original PR #3074 by @dgquintas

Minor fixes to previously existing docs.

Use it to validate that arithmetic on time types makes even some vague
kind of sense.

Move completion queue binding for new requests to the new request
request time, not server instantiation time.

Add a GrpcLibrary class to wrap grpc_init and grpc_shutdown and convert all the tests to init/shutdown free.

tag. This can happen if the tag is actually an integer being
typecast to void*

To avoid breaking the API of existing Next calls, I've made
a new AsyncNext method with a tri-state return that indicates
whether there is a shutdown, an actual event, or a timeout.

Still needs proper testing for the AsyncNext method specifically.

If the deadline elapses, return true but have a null tag.