Complete the method, lastThree(), that takes in String and returns a new String made up of only the last three characters of the original String. For example, if the given String is "class. mimir. io" the returned String would be ".io" If the given String is 3 characters or less in length, just return the original String. class Class1 {
public static String lastThree(String s) {
//TODO: complete the method

}
}