protected void waitFor(boolean createdVal) {
        while (renderable.get() != createdVal) {
            try {
                Thread.sleep(10);
            } catch (InterruptedException ex) {}
        }
    }
Accesses the listener that receives events related to this context.

@return the pre-existing instance
jme3-ios/src/main/java/com/jme3/system/ios/IGLESContext.java