function imagick() {

    let stack = [];

    let callbackFunction = function (param) {
        stack.push(param);
    }

    this.composit = function (param1) {
        return new _composit(param1, this, callbackFunction)
    }
    this.convert = function (param2) {
        return new _convert(param2, this, callbackFunction)
    }

    this.write = function () {
        console.log("collecting stack");
        console.log(stack);
    }
}

function _composit(param, parent, callback) {
    // reference to parent object
    this.parentObj = parent;

    this.att = param

    console.log(this.att);

    this.test = function (param) {
        console.log(param);
        // return to reference from itself
        return this;
    }

    this.end = function () {
        // return to reference of parent object
        callback("callback 1");
        return this.parentObj;
    }
}

function _convert(param, parent, callback) {
    // reference to parent object
    this.parentObj = parent;

    // saving param
    this.att = param;

    // printing att
    console.log(this.att);

    this.resize = function (param) {
        console.log(param);
        // return to reference from itself
        return this;
    }

    this.end = function () {
        // return to reference of parent object
        callback("callback 2");
        return this.parentObj;
    }
}


var im = new imagick();

im.composit("test")
        .test("blub")
        .end()
    .composit("test")
        .test("blub")
        .end()
    .composit("test")
        .end()
    .write();