How to use the ngx-color-picker.Cmyk function in ngx-color-picker

public color7: string = '#f200bd';
  public color8: string = '#a8ff00';
  public color9: string = '#278ce2';
  public color10: string = '#0a6211';
  public color11: string = '#f2ff00';
  public color12: string = '#f200bd';
  public color13: string = 'rgba(0,255,0,0.5)';
  public color14: string = 'rgb(0,255,255)';
  public color15: string = 'rgb(255,0,0)';
  public color16: string = '#a51ad633';
  public color17: string = '#666666';
  public color18: string = '#ff0000';

  public cmykValue: string = '';

  public cmykColor: Cmyk = new Cmyk(0, 0, 0, 0);

  constructor(public vcRef: ViewContainerRef, private cpService: ColorPickerService) {}

  public onEventLog(event: string, data: any): void {
    console.log(event, data);
  }

  public onChangeColor(color: string): void {
    console.log('Color changed:', color);
  }

  public onChangeColorCmyk(color: string): Cmyk {
    const hsva = this.cpService.stringToHsva(color);

    if (hsva) {
      const rgba = this.cpService.hsvaToRgba(hsva);

public onChangeColorCmyk(color: string): Cmyk {
    const hsva = this.cpService.stringToHsva(color);

    if (hsva) {
      const rgba = this.cpService.hsvaToRgba(hsva);

      return this.cpService.rgbaToCmyk(rgba);
    }

    return new Cmyk(0, 0, 0, 0);
  }