Write a complete method to create an array of random integers. The method takes in three integer parameters: the array size, the lower bound, and the upper bound. The method also takes in a boolean parameter. The method creates and returns an integer array of the specified size that contains random numbers between and lower and upper bound. If the boolean parameter is true, the upper bound is inclusive. If the boolean parameter is false, the upper bound is not inclusive (meaning it is exclusive). Note the lower bound is always inclusive. If any of the parameters are invalid, null is returned.