EDIT

  <fragments xsi:type="fragment:StringModelFragment" xmi:id="_gSpRsDQDEeeTNOFVGI4q2w" featurename="descriptors" parentElementId="xpath:/">

    <elements xsi:type="basic:PartDescriptor" xmi:id="_gSpRsTQDEeeTNOFVGI4q2w" elementId="eu.etaxonomy.taxeditor.editor.view.derivate.DerivateView" label="%command.label.DERIVATIVE_EDITOR" iconURI="platform:/plugin/eu.etaxonomy.taxeditor.editor/icons/derivate_view-16x16-32.png" tooltip="%command.label.DERIVATIVE_EDITOR" allowMultiple="true" category="" closeable="true" dirtyable="true" contributionURI="bundleclass://eu.etaxonomy.taxeditor.editor/eu.etaxonomy.taxeditor.editor.view.derivate.DerivateView">

      <tags>View</tags>

      <handlers xmi:id="_E5l4wDVqEee_b7RlBzTDRw" elementId="eu.etaxonomy.taxeditor.editor.view.derivate.handler.CreateFieldUnitHandler" contributionURI="bundleclass://eu.etaxonomy.taxeditor.editor/eu.etaxonomy.taxeditor.editor.view.derivate.handler.CreateFieldUnitHandler" command="_BjF3ADVqEee_b7RlBzTDRw"/>

      <handlers xmi:id="_ha1I4DmBEeeOos_QXKSXcA" elementId="eu.etaxonomy.taxeditor.editor/eu.etaxonomy.taxeditor.editor.view.derivate.handler.AddSpecimenHandler" contributionURI="bundleclass://eu.etaxonomy.taxeditor.editor/eu.etaxonomy.taxeditor.editor.view.derivate.handler.AddSpecimenHandler" command="_qqMbcDmBEeeOos_QXKSXcA"/>

      <handlers xmi:id="_FOiO0DocEeecLdI14WMq7w" elementId="eu.etaxonomy.taxeditor.editor.view.derivate.handler.AddTissueSampleHandler" contributionURI="bundleclass://eu.etaxonomy.taxeditor.editor/eu.etaxonomy.taxeditor.editor.view.derivate.handler.AddTissueSampleHandler" command="_I2LD4DocEeecLdI14WMq7w"/>

    <elements xsi:type="commands:Command" xmi:id="_ZHC3oLKVEeikjKoOnLFm2w" elementId="eu.etaxonomy.taxeditor.editor.charactermatrix.command.createDefaultTaxonDescription" commandName="%handledmenuitem.label.19"/>

    <elements xsi:type="commands:Command" xmi:id="_fkPkkLKVEeikjKoOnLFm2w" elementId="eu.etaxonomy.taxeditor.editor.charactermatrix.command.createLiteratureTaxonDescription" commandName="%handledmenuitem.label.20"/>

    <elements xsi:type="commands:Command" xmi:id="_Z51sQLy2EeioE565ihOF2g" elementId="eu.etaxonomy.taxeditor.editor.view.descriptive.command.adddescriptionWithSource" commandName="%handledmenuitem.label.18"/>

    <elements xsi:type="commands:Command" xmi:id="_tuB4AL9KEemCian_vXpNsA" elementId="eu.etaxonomy.taxeditor.editor.name.swapSynonymAndAcceptedSetNameInSource" commandName="%command.name.611"/>

    <elements xsi:type="commands:Command" xmi:id="_yknsIL9NEemCian_vXpNsA" elementId="eu.etaxonomy.taxeditor.editor.view.descriptive.e4.handler.MoveDescriptionToOtherTaxonHandlerSetNameInSource" commandName="%command.name.131"/>

    <elements xsi:type="commands:Command" xmi:id="__8WFwL9OEemCian_vXpNsA" elementId="eu.etaxonomy.taxeditor.editor.view.descriptive.command.moveDescriptionElementsSetNameInSource" commandName="%command.name.132"/>

            </test>

         </with>

      </definition>

      <definition

            id="isTaxonBase">

         <with

            class="eu.etaxonomy.taxeditor.editor.name.handler.NameEditorMenuPropertyTester"

            id="eu.etaxonomy.taxeditor.editor.name.propertyTester"

            namespace="eu.etaxonomy.taxeditor.editor.name.propertyTester"

            type="java.lang.Object">

      </propertyTester>

      <propertyTester

        m_bindingContext.bindValue(observeSelectionBtnDeleteSynonymsObserveWidget, deleteSynonymsConfiguratorObserveValue, null, null);

        IObservableValue observeSelectionbtnDeleteMisappliedNamesObserveWidget = WidgetProperties.selection().observe(btnDeleteMisappliedNames);

        m_bindingContext.bindValue(observeSelectionbtnDeleteMisappliedNamesObserveWidget, deleteMisappliedNamesConfiguratorObserveValue, null, null);

        IObservableValue observeSelectionbtnTaxonRelationshipsObserveWidget = WidgetProperties.selection().observe(btnTaxonRelationships);