__PACKAGE__->attr_duration(qw(time_estimation));
__PACKAGE__->before_save(\&_before_save_create_fb_number);
-__PACKAGE__->before_save(\ &_before_save_invalidate_requirement_spec_version);
+__PACKAGE__->before_save(\&_before_save_invalidate_requirement_spec_version);
__PACKAGE__->before_delete(\&_before_delete_invalidate_requirement_spec_version);
sub _before_save_create_fb_number {