empty tags are created even though the values are null in the sub-element tags & mentioned mapping as "optional"

Hi,
I have a binding file as follows :
<mapping name="ADR_ENTR" class="com.dnb.dlws.binding.SubjBusinessAddressEntryVO">
<value name="ADR_USG_CD" field="adrUsgCd" usage="optional" />
<structure name="ADR_ENTR_VW" usage="optional">
<structure name="ADR_LINE" usage="optional">
<value name="TEXT" field="adrLine1Text" usage="optional" />
<value name="TEXT_CD" field="adrLine1TextCode" usage="optional" />
<value name="DSPL_SEQ_NBR" field="adr1dsplSeqNbr" usage="optional" />
</structure>
<structure name="ADR_LINE" usage="optional">
<value name="TEXT" field="adrLine2Text" usage="optional" />
<value name="TEXT_CD" field="adrLine2TextCode" usage="optional" />
<value name="DSPL_SEQ_NBR" field="adr2dsplSeqNbr" usage="optional" />
</structure>
<value name="POST_TOWN" field="postTown" usage="optional" />
<value name="POST_CODE" field="postCode" usage="optional" />
<value name="CNTY" field="cnty" usage="optional" />
<value name="TERR" field="terr" usage="optional" />
<value name="GEO_REF_ID" field="geoRefId" usage="optional" />
<value name="LANG_CD" field="langCd" usage="optional" />
</structure>
</mapping>

Please find attached corresponding java file to map the fileds.

if adrLine1Text , adrLine1TextCode and adr1dsplSeqNbr ( Address Line 1) fileds are null in the java object, JiBX should not create empty tag <ADR_LINE/> . Here <ADR_LINE> is mentioned as "optional" tag.

In our project, there should not be any empty tags like <ADR_LINE/>. Because of this requirement, we are evaluating other binding APIs.
It should be handleded in the subsequent release.
Please let me know if you require additional information.

Thanks
Maruthee