code: protected function createNodeWithBaseStyle($nodeType, $lineNumbers)
      {
          $node = $this->doc->createElementNS(static::NS_TEXT, $nodeType);
          if ($lineNumbers) {
              if ($this->node_template_1_used) {
                  $node->setAttribute('text:style-name', 'Antragsgrün_20_LineNumbered_20_Standard');
              } else {
                  $this->node_template_1_used = true;
                  $node->setAttribute('text:style-name', 'Antragsgrün_20_LineNumbered_20_First');
              }
          } else {
              $node->setAttribute('text:style-name', 'Antragsgrün_20_Standard');
          }
  
          return $node;
      }
docs: @param string $nodeType
  @param bool $lineNumbers
  
  @return \DOMElement|\DOMNode