Switch to popup

behat.inc.php

    /**
     * @hidden
     *
     * @Then /^I switch to popup by clicking "([^"]*)"$/
     */
    public function iSwitchToPopupByClicking($arg1) {
        $originalWindowName = $this->getMainContext()->getSession()->getWindowName();
        $this->setMainWindow();
        $this->getMainContext()->getSession()->getPage()->clickLink("$arg1"); //Pressing the withdraw button

        $popupName = $this->getNewPopup($originalWindowName);

        //Switch to the popup Window
        $this->getMainContext()->getSession()->switchToWindow($popupName);
    }