+
+=head2 clear_columns_cache
+
+ C4::SQLHelper->clear_columns_cache();
+
+cleans the internal cache of sysprefs. Please call this method if
+you update a tables structure. Otherwise, your new changes
+will not be seen by this process.
+
+=cut
+
+sub clear_columns_cache {
+ %$hashref = ();
+}
+
+
+