@Override
    protected Object execute(Object[] data, State state) {
        return null; //Since the instanceOfFloat function takes in 1 parameter, this method does not get called. Hence,
        // not implemented.
    }
Executor class for instanceOf Double function. Function execution logic is implemented in execute here.
modules/siddhi-core/src/main/java/io/siddhi/core/executor/function/InstanceOfFloatFunctionExecutor.java