+const char *
+gnumeric_get_sheet_name (struct spreadsheet *s, int n)
+{
+ return NULL;
+}
+
+char *
+gnumeric_get_sheet_range (struct spreadsheet *s, int n)
+{
+ return NULL;
+}
+
+struct casereader *
+gnumeric_make_reader (struct spreadsheet *spreadsheet,
+ const struct spreadsheet_read_options *opts)
+{
+ return NULL;
+}
+
+void
+gnumeric_unref (struct spreadsheet *r)
+{
+}
+
+