public boolean isValid() {
		return isValid(handle);
	}
This constructor is package-private to not invite user applications to persist and recover ID values
manually. Instead, Steamworks API functions should always be used to obtain valid steam IDs.
<p>
If you need to serialize IDs, e.g. for client/server communication, use the static functions
{@link SteamNativeHandle#getNativeHandle(SteamNativeHandle)} and {@link SteamID#createFromNativeHandle(long)}
instead.
java-wrapper/src/main/java/com/codedisaster/steamworks/SteamID.java