/**
* Add an field to the model. If a field with the same name has already been added,
* it will be replaced by the given field.
*
* @param Opus_Model_Field $field Field instance that gets appended to the models field collection.
* @return Opus_Model_Abstract Provide fluent interface.
*/
public function addField(Opus_Model_Field $field)
{
$this->_fields[$field->getName()] = $field;
$field->setOwningModelClass(get_class($this));
return $this;
}
