fun createFeedStream(streamHandler: Function<Runnable!, StreamHandler<FeedMessage!>!>!): Unit (source)
Streams every message in the instance's database.
streamHandler - Function<Runnable!, StreamHandler<FeedMessage!>!>!: a function that can be used to construct the handler for processing the streamed messages, using a runnable which can be ran to close the stream early.
JsonProcessingException - if the request to open the stream could not be made due to a JSON marshalling error.
ConnectionClosedException - if the stream could not be started because the connection is no longer open.