How to use the alloyeditor.EzBtnMoveDown function in alloyeditor

return (
            <button title="{title}" tabindex="{this.props.tabIndex}">
                <svg>
                    
                </svg>
            </button>
        );
    }
}

AlloyEditor.Buttons[EzBtnMoveDown.key] = AlloyEditor.EzBtnMoveDown = EzBtnMoveDown;

const eZ = (window.eZ = window.eZ || {});

eZ.ezAlloyEditor = eZ.ezAlloyEditor || {};
eZ.ezAlloyEditor.ezBtnMoveDown = EzBtnMoveDown;

return (
            <button title="{title}" tabindex="{this.props.tabIndex}">
                <svg>
                    
                </svg>
            </button>
        );
    }
}

AlloyEditor.Buttons[EzBtnMoveDown.key] = AlloyEditor.EzBtnMoveDown = EzBtnMoveDown;
eZ.addConfig('ezAlloyEditor.ezBtnMoveDown', EzBtnMoveDown);