c8fee158_pl____h_selectBooleanCheckbox___Description
[Name] validator [Type] javax.faces.el.MethodBinding [Supports EL?] Only EL [Description] 
A method-binding EL expression which is invoked during the validation phase for this component. The invoked method is expected to check the submitted value for this component, and if not acceptable then report a validation error for the component. The method is expected to have the prototype public void aMethod(FacesContext, UIComponent,Object)
Apache MyFaces JSF-2.0 Core Impl - <h:selectBooleanCheckbox>