

`_system`: Opens in the system's web browser. `_self`: Opens in the Cordova WebView if the URL is in the white list, otherwise it opens in the `InAppBrowser`.

_target_: The target in which to load the URL, an optional parameter that defaults to `_self`. Call `encodeURI()` on this if the URL contains Unicode characters. _ref_: Reference to the `InAppBrowser` window when the target is set to `'_blank'`. Opens a URL in a new `InAppBrowser` instance, the current browser
