SessionController - pode ser estático?

public class SessionController {
    
    public Object getSessionAtribute(String info) {            
        FacesContext fc = FacesContext.getCurrentInstance();
        HttpSession session = (HttpSession) fc.getExternalContext().getSession(false);
        return session.getAttribute(info);   
    }
    
    public void setSessionAtribute(String info, Object o ) {            
        FacesContext fc = FacesContext.getCurrentInstance();
        HttpSession session = (HttpSession) fc.getExternalContext().getSession(true);
        session.setAttribute(info, o);  
    }   
    
    public void invalidarSessao() {
        FacesContext fc = FacesContext.getCurrentInstance();
        HttpSession session = (HttpSession) fc.getExternalContext().getSession(false);
        session.invalidate();     
    }    
}