Returns the file system root elements, as an array of strings.
On Windows, each of the drives is a root element in the format
d:\.
On Unix-like systems, there is just one root ( / ).
Example 5.242. File class
say.File~listRoots~toString(,"")-- C:\ D:\ E:\ R:\ (e. g. on Windows)say.File~listRoots~toString(,"")-- / (Unix-like system)
