@Override
	public ICreateFeature getCreateFeature(IFeatureProvider fp) {
		return new CreateTaskFeature(fp) {
		};
	}

  protected TaskFeatureContainer createFeatureContainer(IFeatureProvider fp) 

public class DataIoBarrierFeatureContainer extends CustomShapeFeatureContainer {

	@Override
	protected IShapeFeatureContainer createFeatureContainer(IFeatureProvider fp) {
		return new DataObjectFeatureContainer() {

			@Override
			public IAddFeature getAddFeature(IFeatureProvider fp) {
				return new AddDataObjectFeature(fp) {
					@Override
					protected void decorateShape(IAddContext context, ContainerShape containerShape, DataObject businessObject) {
						super.decorateShape(context, containerShape, businessObject); 
						}
				};
			}

			@Override
			public ICreateFeature getCreateFeature(IFeatureProvider fp) {
				return new CreateDataObjectFeature(fp) {

					@Override
					public DataObject createBusinessObject(ICreateContext context) {
						DataObject businessObject = (DataObject) super.createBusinessObject(context);
						return businessObject;
					}

					@Override
					public String getCreateImageId() {
						return SampleImageProvider.getImageId(customTaskDescriptor, IconSize.SMALL);
					}

					@Override
					public String getCreateLargeImageId() {
						return SampleImageProvider.getImageId(customTaskDescriptor, IconSize.LARGE);
					}
					
					@Override
					public String getCreateDescription() {
						return "Create "+customTaskDescriptor.getName();
					}
				};
			}
			@Override
			public IDirectEditingFeature getDirectEditingFeature(IFeatureProvider fp) {
				return null;
			}

			@Override
			public IResizeShapeFeature getResizeFeature(IFeatureProvider fp) {
				return null;
			}
		};
	}

	public String getId(EObject arg0) {
		EStructuralFeature f = ModelDecorator.getAnyAttribute(arg0, "type");
		if (f!=null) {
			Object id = arg0.eGet(f);
			if (TYPE_VALUE.equals(id))
				return CUSTOM_TASK_ID;
		}
		return null;
	}
}

<customTask
            category="Interoperability"
            description="Data Interoperability Barrier"
            featureContainer="com.hedadura16.DataIoBarrierFeatureContainer"
            icon="InteroperabilityBarrier.png"
            id="com.hedadura16.dataIoBarrierId"
            name="Data Interoperability Barrier"
            runtimeId="com.hedadura16.runtimeId"
            type="DataObject">
         <property name="type" value="DataIoBarrier">
         </property>
</customTask>

/**
* this MUST be overridden if you intend to add extension attributes to your
 * business object (bpmn2 element) - see the code example. You will also
 * want to provide your own images for the tool palette by overriding
* getCreateImageId() and getCreateLargeImageId() in your Create Feature.
 */
@Override
public ICreateFeature getCreateFeature(IFeatureProvider fp) {
	return new CreateDataObjectFeature(fp) {
};
}