code: public void forceMouseOut() {
  
          for (Widget w : m_buttonPanel) {
              if (w instanceof CmsPushButton) {
                  ((CmsPushButton)w).clearHoverState();
              }
          }
          CmsDomUtil.ensureMouseOut(this);
          removeStyleName(I_CmsLayoutBundle.INSTANCE.stateCss().cmsHovering());
      }
docs: Forces mouse out on self and contained buttons.<p>