OCR-D / core

        for UnorderedGroup_ in self.UnorderedGroup:

            namespaceprefix_ = self.UnorderedGroup_nsprefix_ + ':' if (UseCapturedNS_ and self.UnorderedGroup_nsprefix_) else ''

            UnorderedGroup_.export(outfile, level, namespaceprefix_, namespacedef_='', name_='UnorderedGroup', pretty_print=pretty_print)

    def to_etree(self, parent_element=None, name_='UnorderedGroupIndexedType', mapping_=None, reverse_mapping_=None, nsmap_=None):

        if parent_element is None:

            element = etree_.Element('{http://schema.primaresearch.org/PAGE/gts/pagecontent/2019-07-15}' + name_, nsmap=nsmap_)

        else:

            element = etree_.SubElement(parent_element, '{http://schema.primaresearch.org/PAGE/gts/pagecontent/2019-07-15}' + name_, nsmap=nsmap_)

        if self.id is not None:

            element.set('id', self.gds_format_string(self.id))

        if self.regionRef is not None:

            element.set('regionRef', self.gds_format_string(self.regionRef))

        if self.index is not None:

            element.set('index', self.gds_format_integer(self.index))

        if self.caption is not None:

            element.set('caption', self.gds_format_string(self.caption))

        if self.type_ is not None:

            element.set('type', self.gds_format_string(self.type_))

        if self.continuation is not None:

            element.set('continuation', self.gds_format_boolean(self.continuation))

        if self.custom is not None:

            element.set('custom', self.gds_format_string(self.custom))

        if self.comments is not None:

            element.set('comments', self.gds_format_string(self.comments))

        if self.UserDefined is not None:

            UserDefined_ = self.UserDefined

            UserDefined_.to_etree(element, name_='UserDefined', mapping_=mapping_, reverse_mapping_=reverse_mapping_, nsmap_=nsmap_)

        for Labels_ in self.Labels:

            Labels_.to_etree(element, name_='Labels', mapping_=mapping_, reverse_mapping_=reverse_mapping_, nsmap_=nsmap_)

        for RegionRef_ in self.RegionRef:

            RegionRef_.to_etree(element, name_='RegionRef', mapping_=mapping_, reverse_mapping_=reverse_mapping_, nsmap_=nsmap_)

        for OrderedGroup_ in self.OrderedGroup:

            OrderedGroup_.to_etree(element, name_='OrderedGroup', mapping_=mapping_, reverse_mapping_=reverse_mapping_, nsmap_=nsmap_)

        for UnorderedGroup_ in self.UnorderedGroup:

            UnorderedGroup_.to_etree(element, name_='UnorderedGroup', mapping_=mapping_, reverse_mapping_=reverse_mapping_, nsmap_=nsmap_)

        if mapping_ is not None:

            mapping_[id(self)] = element

        if reverse_mapping_ is not None:

            reverse_mapping_[element] = self

        return element

    def build(self, node, gds_collector_=None):

        self.gds_collector_ = gds_collector_

        if SaveElementTreeNode:

        for UnorderedGroupIndexed_ in self.UnorderedGroupIndexed:

            namespaceprefix_ = self.UnorderedGroupIndexed_nsprefix_ + ':' if (UseCapturedNS_ and self.UnorderedGroupIndexed_nsprefix_) else ''

            UnorderedGroupIndexed_.export(outfile, level, namespaceprefix_, namespacedef_='', name_='UnorderedGroupIndexed', pretty_print=pretty_print)

    def to_etree(self, parent_element=None, name_='OrderedGroupIndexedType', mapping_=None, reverse_mapping_=None, nsmap_=None):

        if parent_element is None:

            element = etree_.Element('{http://schema.primaresearch.org/PAGE/gts/pagecontent/2019-07-15}' + name_, nsmap=nsmap_)

        else:

            element = etree_.SubElement(parent_element, '{http://schema.primaresearch.org/PAGE/gts/pagecontent/2019-07-15}' + name_, nsmap=nsmap_)

        if self.id is not None:

            element.set('id', self.gds_format_string(self.id))

        if self.regionRef is not None:

            element.set('regionRef', self.gds_format_string(self.regionRef))

        if self.index is not None:

            element.set('index', self.gds_format_integer(self.index))

        if self.caption is not None:

            element.set('caption', self.gds_format_string(self.caption))

        if self.type_ is not None:

            element.set('type', self.gds_format_string(self.type_))

        if self.continuation is not None:

            element.set('continuation', self.gds_format_boolean(self.continuation))

        if self.custom is not None:

            element.set('custom', self.gds_format_string(self.custom))

        if self.comments is not None:

            element.set('comments', self.gds_format_string(self.comments))

        if self.UserDefined is not None:

            UserDefined_ = self.UserDefined

            UserDefined_.to_etree(element, name_='UserDefined', mapping_=mapping_, reverse_mapping_=reverse_mapping_, nsmap_=nsmap_)

        for Labels_ in self.Labels:

            Labels_.to_etree(element, name_='Labels', mapping_=mapping_, reverse_mapping_=reverse_mapping_, nsmap_=nsmap_)

        for RegionRefIndexed_ in self.RegionRefIndexed:

            RegionRefIndexed_.to_etree(element, name_='RegionRefIndexed', mapping_=mapping_, reverse_mapping_=reverse_mapping_, nsmap_=nsmap_)

        for OrderedGroupIndexed_ in self.OrderedGroupIndexed:

            OrderedGroupIndexed_.to_etree(element, name_='OrderedGroupIndexed', mapping_=mapping_, reverse_mapping_=reverse_mapping_, nsmap_=nsmap_)

        for UnorderedGroupIndexed_ in self.UnorderedGroupIndexed:

            UnorderedGroupIndexed_.to_etree(element, name_='UnorderedGroupIndexed', mapping_=mapping_, reverse_mapping_=reverse_mapping_, nsmap_=nsmap_)

        if mapping_ is not None:

            mapping_[id(self)] = element

        if reverse_mapping_ is not None:

            reverse_mapping_[element] = self

        return element

    def build(self, node, gds_collector_=None):

        self.gds_collector_ = gds_collector_

        if SaveElementTreeNode: