in mobius-extras/src/main/java/com/spotify/mobius/extras/connections/MergeConnectablesConnection.java [62:73]
public void accept(A value) {
synchronized (connections) {
if (connections.size() == 0) {
throw new IllegalStateException("Calling accept on an already disposed connection");
}
}
for (Connection<A> c : connections) {
c.accept(value);
}
}