receive All Map
open fun receiveAllMap(sessions: Map<FlowSession, Class<out Any>>, maySkipCheckpoint: Boolean = false): Map<FlowSession, UntrustworthyData<Any>>
Suspends until a message has been received for each session in the specified sessions.
Consider receiveAll(receiveType: Class
Remember that when receiving data from other parties the data should not be trusted until it's been thoroughly verified for consistency and that all expectations are satisfied, as a malicious peer may send you subtly corrupted data in order to exploit your code.