Function jsonrpc_pubsub::new_subscription

pub fn new_subscription<M, F, G>(
    notification: &str, 
    subscribe: F, 
    unsubscribe: G
) -> (Subscribe<F, G>, Unsubscribe<G>) where
    M: PubSubMetadata,
    F: SubscribeRpcMethod<M>,
    G: UnsubscribeRpcMethod, 

Creates new subscribe and unsubscribe RPC methods