func (p *PushCenter) UnregisterHandlerForIdentity(identity Identity) {

	if identity.Name == AllIdentity.Name {
		p.defaultHander = nil
		return
	}

	if _, exists := p.handlers[identity.Name]; exists {
		delete(p.handlers, identity.Name)
	}
}
func (p *PushCenter) UnregisterHandlerForIdentity(identity Identity) {

	if identity.Name == AllIdentity.Name {
		p.defaultHander = nil
		return
	}

	if _, exists := p.handlers[identity.Name]; exists {
		delete(p.handlers, identity.Name)
	}
}
// UnregisterHandlerForIdentity unegisters the given EventHandler for the given Entity Identity.