public LdapUserToken(Authentication auth,String defaultAuthority){
  this(auth,new GrantedAuthorityImpl(defaultAuthority));
}

public LdapUserToken ( Authentication auth , String defaultAuthority ) { this ( auth , new GrantedAuthorityImpl ( defaultAuthority ) ) ; }
construct a new ldapauthenticationtoken , using an existing authentication object and granting all users a default authority .
