protected static function _relationsToLoad() {
		try {
			if (!$connection = static::connection()) {
				return;
			}
		} catch (ConfigException $e) {
			return;
		}

		if (!$connection::enabled('relationships')) {
			return;
		}

		$self = static::_object();

		foreach ($self->_relationTypes as $type) {
			$self->$type = Set::normalize($self->$type);
			foreach ($self->$type as $name => $config) {
				$self->_relationsToLoad[$name] = $type;
				$fieldName = $self->_relationFieldName($type, $name);
				$self->_relationFieldNames[$fieldName] = $name;
			}
		}
	}