How to use the @pixi/utils.sayHello function in @pixi/utils

this.smoothProperty = 'oImageSmoothingEnabled';
            }
            else if (this.rootContext.msImageSmoothingEnabled)
            {
                this.smoothProperty = 'msImageSmoothingEnabled';
            }
        }

        this.initPlugins(CanvasRenderer.__plugins);

        this.blendModes = mapCanvasBlendModesToPixi();
        this._activeBlendMode = null;

        this.renderingToScreen = false;

        sayHello('Canvas');

        /**
         * Fired after rendering finishes.
         *
         * @event PIXI.CanvasRenderer#postrender
         */

        /**
         * Fired before rendering starts.
         *
         * @event PIXI.CanvasRenderer#prerender
         */

        this.resize(this.options.width, this.options.height);
    }

premultipliedAlpha: this.transparent && this.transparent !== 'notMultiplied',
                stencil: true,
                preserveDrawingBuffer: options.preserveDrawingBuffer,
                powerPreference: this.options.powerPreference,
            });
        }

        /**
         * Flag if we are rendering to the screen vs renderTexture
         * @member {boolean}
         * @readonly
         * @default true
         */
        this.renderingToScreen = true;

        sayHello(this.context.webGLVersion === 2 ? 'WebGL 2' : 'WebGL 1');

        this.resize(this.options.width, this.options.height);
    }

}

        this.initPlugins(CanvasRenderer.__plugins);

        /**
         * Tracks the blend modes useful for this renderer.
         *
         * @member {object}
         */
        this.blendModes = mapCanvasBlendModesToPixi();
        this._activeBlendMode = null;
        this._outerBlend = false;

        this.renderingToScreen = false;

        sayHello('Canvas');

        /**
         * Fired after rendering finishes.
         *
         * @event PIXI.CanvasRenderer#postrender
         */

        /**
         * Fired before rendering starts.
         *
         * @event PIXI.CanvasRenderer#prerender
         */

        this.resize(this.options.width, this.options.height);
    }