ERROR] gwtbootstrap IconType has no default has no default (zero args). What should I do?

[Hannes Heckner]

Hi,

I created my own MenuButton class and now want to use gwtbootstrap as Icon.

<n:MenuButton ui:field="copyItemsButton" 

resource="LINUX">

<ui:msg description="Label for button: inherit / copy items from another meeting">

Copy&nbsp;items&nbsp;from other meeting

</ui:msg>

</n:MenuButton>

I added at the top:

<ui:with field='icons' type='com.github.gwtbootstrap.client.ui.constants.IconType' />

MenuButton.ui.xml is defined as follows:

<g:HorizontalPanel addStyleNames="{style.image} menuButton ub-MenuButton" ui:field="panel">

<g:cell verticalAlignment="ALIGN_MIDDLE">

<b:Icon ui:field="icon" type="LINUX"/>

</g:cell>

<g:cell verticalAlignment="ALIGN_MIDDLE">

<g:Label ui:field="label" />

</g:cell>

</g:HorizontalPanel>

My MenuButton.java sets the type using IconType. 

What can I do?

Best regards

Hannes