file-exists() # boolean file-exists(string path)
The file-exists() function accepts exactly one argument that is converted to a string. The argument must be a fit://-URL, otherwise false() will be returned.
The function returns true() if the URL references an existing file or directory, false() otherwise.
file-exists('fit://site/path/to/file')file-exists('fit://site/path/to/directory/')file-exists('fit://request/content')