code: final public boolean save() {
  		Transaction t = new Transaction();
  		try {
  			t.setSuccessful(save(t));
  		} finally {
  			t.finish();
  		}
  		return t.isSuccessful();
  	}
docs: Save this model to the database.
  If this model has an @AutoIncrement annotation on a property
  than that property will be set when this method returns.
  
  @return whether or not the save was successful.