increase() {
        if (this._value < this.defaultMaxValues[this._isUnitTotal]) {

            const value = this.correctValueDefaultRang(this._value + 1);
            this.writeValue(value);

            if (this.onChangeCallback) {
                this.onChangeCallback();
            }

            this.valueChange.emit(this._value);
        }
    }

    decrease() {

        if (this._value > this._min) {

            const value = this.correctValueDefaultRang(this._value - 1);
            this.writeValue(value);

            if (this.onChangeCallback) {
                this.onChangeCallback();
            }

            this.valueChange.emit(this._value);
        }
    }