code: protected void bindManyToMany(Association property, ManyToOne element,
                                    InFlightMetadataCollector mappings, String sessionFactoryBeanName) {
          bindManyToOne(property, element, EMPTY_PATH, mappings, sessionFactoryBeanName);
          element.setReferencedEntityName(property.getOwner().getName());
      }
docs: Binds a many-to-many relationship. A many-to-many consists of
  - a key (a DependentValue)
  - an element
  
  The element is a ManyToOne from the association table to the target entity
  
  @param property The grails property
  @param element  The ManyToOne element
  @param mappings The mappings