class SampleExtends3 {
    // class variables
    private extends;
}

// class properties
class SampleExtends4 {
    private var;
    set extends(value) {}
    get extends() {
        return this.var;
    }
}

class SampleExtends5 {
    extends() {} // class methods
}

// interface declarations
interface SampleExtends6 {
    extends: any;
}