Complete the activity with the completion status provided.
Given a token representing a context, associate it with the current thread of
control. This will imp
Suspend the current activity from this thread and return the token representing
the context, if any,
Get the timeout value currently associated with activities.
Set the termination status for the current activity, if any.
Set the timeout to be associated with all subsequently created activities. A
default value of 0 is a
Start a new activity with a given coordination type. If there is already an
activity associated with