Path relative to module base directory. Path is unique and identifies directory
within given FileSystem. File separator is the forward
slash ('/'), even on Microsoft Windows.
Returns src/main/java/com if module base dir is
/path/to/module and if directory is
Relative path is not null and is normalized ('foo/../foo' is replaced by 'foo').
Normalized absolute path. File separator is forward slash ('/'), even on Microsoft Windows.
This is not canonical path. Symbolic links are not resolved. For example if /project/src links
to /tmp/src and basedir is /project, then this method returns /project/src. Use
file().getCanonicalPath() to resolve symbolic link.