W3C switchToWindow takes a handle
W3C switchToWindow takes a handle

The W3C specification dictates that the parameter used to select the
window should be named `handle`.

Source: https://www.w3.org/TR/webdriver/#switch-to-window

OndraM/php-webdriver,OndraM/php-webdriver,OndraM/php-webdriver,OndraM/php-webdriver