code: private void deleteManyToManyLinks(Many2ManyAssociation association){
          String join = association.getJoin();
          String sourceFK = association.getSourceFkName();
          new DB(metaModelLocal.getDbName()).exec("DELETE FROM " + join + " WHERE " + sourceFK + " = ?", getId());
      }
docs: Deletes all records from a join table related to this model.
  
  @param association association  to another table.