code: public void setMode(final CollapsibleMode mode) {
  		getOrCreateComponentModel().mode = CollapsibleMode.SERVER.equals(mode) ? CollapsibleMode.DYNAMIC : mode;
  	}
docs: Sets this WCollapsible's mode of operation. CollapsibleMode.SERVER is mapped to CollapsibleMode.DYNAMIC in order
  to prevent an a11y issue as per <a href="https://github.com/BorderTech/wcomponents/issues/694">#694</a>.
  
  @param mode the mode of operation.