The method asArray() does not exist on Jabe\Model\Xml\Instance\...lementInstanceInterface. It seems like you code against a sub-type of Jabe\Model\Xml\Instance\...lementInstanceInterface such as Jabe\Model\Knd\Construct...nce\Request\ServiceImpl or Jabe\Model\Knd\Construct...st\DocumentPersonalImpl or Jabe\Model\Knd\Construct...\ConstructionPermitImpl or Jabe\Model\Knd\Construct...ethodGettingResultsImpl or Jabe\Model\Knd\Construct...mpetentOrganizationImpl or Jabe\Model\Knd\Construct...stance\Request\DataImpl or Jabe\Model\Knd\Construct...cipientPersonalDataImpl or Jabe\Model\Knd\Construct...adastralNumberBlockImpl or Jabe\Model\Knd\Construct...nce\Request\ServiceImpl or Jabe\Model\Knd\Construct...adastralNumberBlockImpl or Jabe\Model\Knd\Construct...st\DocumentPersonalImpl or Jabe\Model\Knd\Construct...nce\Request\RequestImpl or Jabe\Model\Knd\Construct...mpetentOrganizationImpl or Jabe\Model\Knd\Construct...stance\Request\DataImpl or Jabe\Model\Knd\Construct...ethodGettingResultsImpl or Jabe\Model\Knd\Construct...\ConstructionPermitImpl or Jabe\Model\Knd\Construct...cipientPersonalDataImpl or Jabe\Model\Knd\Construct...nce\Request\RequestImpl.
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Ignorable by Annotation
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If this is a false-positive, you can also ignore this issue in your code via the ignore-call annotation