BackendData

backendData->toXML()

<BackendData id='exentoPago'>
<value>false</value>
</BackendData>

backendDataGet->getObject(xml)...toXML()

<BackendData id='exentoPago'>
<value>false</value>
</BackendData>

Volcado objeto: BackendData Object ( [id] => exentoPago [value] => false )