@Override
        public void process(List<ComplexEventChunk> complexEventChunks) {
            ComplexEventChunk complexEventChunk = new ComplexEventChunk();
            for (ComplexEventChunk streamEventChunk : complexEventChunks) {
                complexEventChunk.addAll(streamEventChunk);
            }
            process(complexEventChunk);
        }
User preference of output event type. Stored for cloning purpose.
modules/siddhi-core/src/main/java/io/siddhi/core/window/Window.java