XPath is the language used for locating nodes in an XML document.
It is based on the DOM structure (Document object model), we see HTML in a node structure, parent, child, in a heirarchy.
If element is not found in case of find_element Exception will be thrown
in case of find_elements as it returns the collection it will return 0
close() - closes the window, and WebDriver sission still running, quit() - for quitting speficic browser
getWindowHandle() returns the window handle of currently focused window/tabgetWindowHandles() returns all windows/tabs handles launched/opened by same driver instance including all parent and child window.
