How to use the post-robot/src.toProxyWindow function in post-robot

decorate({ value } : { value : CrossDomainWindowType | ProxyWindow }) : ProxyWindow {
                return toProxyWindow(value);
            }
        },

return ZalgoPromise.try(() => {
            if (props.window) {
                return toProxyWindow(props.window).getType();
            }
    
            if (context) {
                if (context !== CONTEXT.IFRAME && context !== CONTEXT.POPUP) {
                    throw new Error(`Unrecognized context: ${ context }`);
                }
                
                return context;
            }
    
            return this.defaultContext;
        });
    }

}).then(win => {
                return toProxyWindow(win);
            });
        });

return ZalgoPromise.try(() => {
            const windowProp = this.props.window;

            if (windowProp) {
                const proxyWin = toProxyWindow(windowProp);
                this.clean.register(() => windowProp.close());
                return proxyWin;
            }

            return new ProxyWindow({ send });
        });
    }