akka.actor.typed.receptionist
A service key is an object that implements this trait for a given protocol T, meaning that it signifies that the type T is the entry point into the protocol spoken by that service (think of it as the set of first messages that a client could send).
Not for user extension, see factories in companion object: ServiceKey#create and ServiceKey#apply
Scala API: Provides a type safe pattern match for listings
Scala API: Provides a type safe pattern match for registration acks
Type-safe down-cast
A service key is an object that implements this trait for a given protocol T, meaning that it signifies that the type T is the entry point into the protocol spoken by that service (think of it as the set of first messages that a client could send).
Not for user extension, see factories in companion object: ServiceKey#create and ServiceKey#apply