public AccessToken(final String token,final String type,final long initialValidSeconds,final Date validUntil){
  this(token,type,initialValidSeconds,validUntil,System.currentTimeMillis());
}

public AccessToken ( final String token , final String type , final long initialValidSeconds , final Date validUntil ) { this ( token , type , initialValidSeconds , validUntil , System . currentTimeMillis ( ) ) ; }
create a new instance with the supplied data
