=head2 extra
-Get or set the objects "extra" attibutes (e.g., "ZEROFILL" for MySQL fields).
+Get or set the objects "extra" attributes (e.g., "ZEROFILL" for MySQL fields).
Call with no args to get all the extra data.
Call with a single name arg to get the value of the named extra attribute,
returned as a scalar. Call with a hash or hashref to set extra attributes.