[DllImport(LibSassDll, CallingConvention = CallingConvention.Cdecl)] public static extern void sass_delete_importer(Sass_Importer_Entry cb);
[DllImport(LibSassDll, CallingConvention = CallingConvention.Cdecl)] public static extern void *sass_importer_get_cookie(Sass_Importer_Entry cb);
[DllImport(LibSassDll, CallingConvention = CallingConvention.Cdecl)] public static extern Sass_Importer_Fn sass_importer_get_function(Sass_Importer_Entry cb);
[DllImport(LibSassDll, CallingConvention = CallingConvention.Cdecl)] public static extern double sass_importer_get_priority(Sass_Importer_Entry cb);
[DllImport(LibSassDll, CallingConvention = CallingConvention.Cdecl)] public static extern void sass_importer_set_list_entry(Sass_Importer_List list, size_t idx, Sass_Importer_Entry entry);