make_tmp
Description:
[ CCode ( cname = "g_dir_make_tmp" ) ]
public string make_tmp (string? tmpl = null) throws FileError
Creates a subdirectory in the preferred directory for temporary files (as returned by get_tmp_dir).
tmpl should be a string in the GLib file name encoding containing a sequence of six 'X' characters, as the parameter to 
      mkstemp. However, unlike these functions, the template should only be a 
      basename, no directory components are allowed. If template is null, a default template is used.
Note that in contrast to g_mkdtemp (and mkdtemp) tmpl
       is not modified, and might thus be a read-only literal string.
Parameters:
| tmpl | Template for directory name,  as in  | 
Returns:
| The actual name used. This string should be freed with g_free when not needed any longer and is is in the GLib file name encoding. In case of errors, null is returned and throws will be set. |