@Suspendable fun <R : Any> await(operation: FlowExternalAsyncOperation<R>): R
Executes the specified operation and suspends until operation completion.
An implementation of FlowExternalAsyncOperation should be provided that creates a new future that the state machine awaits completion of.
@Suspendable fun <R : Any> await(operation: FlowExternalOperation<R>): R
Executes the specified operation and suspends until operation completion.
An implementation of FlowExternalOperation should be provided that returns a result which the state machine will run on a separate thread (using the node's external operation thread pool).