code: public boolean deleteByIds(Object... idValues) {
  		Table table = _getTable();
  		if (idValues == null || idValues.length != table.getPrimaryKey().length)
  			throw new IllegalArgumentException("Primary key nubmer must equals id value number and can not be null");
  		
  		return deleteById(table, idValues);
  	}
docs: Delete model by composite id values.
  @param idValues the composite id values of the model
  @return true if delete succeed otherwise false