public static BtHelperClient from(Context context){
  if (sBtHelperClient == null) {
synchronized (BtHelperClient.class) {
      if (sBtHelperClient == null)       sBtHelperClient=new BtHelperClient(context);
    }
  }
  return sBtHelperClient;
}

public static BtHelperClient from ( Context context ) { if ( sBtHelperClient == null ) { synchronized ( BtHelperClient . class ) { if ( sBtHelperClient == null ) sBtHelperClient = new BtHelperClient ( context ) ; } } return sBtHelperClient ; }
obtains the bthelperclient from the given context .
