code: function prepareParentsAndLastBallAndPowcount(callbacks){
  	parentComposer.pickParentsAndLastBallAndPowcount(
  		db, 
  		function(err, arrParentUnits, last_stable_mc_ball, last_stable_mc_ball_unit, last_stable_mc_ball_mci, round_index){
  			if (err)
  				return callbacks.ifError("unable to find parents: "+err);
  			var objResponse = {
  				parent_units: arrParentUnits,
  				last_stable_mc_ball: last_stable_mc_ball,
  				last_stable_mc_ball_unit: last_stable_mc_ball_unit,
  				last_stable_mc_ball_mci: last_stable_mc_ball_mci,
  				round_index: round_index
  			};
  	
  			callbacks.ifOk(objResponse);
  		}
  	);
  }
docs: recover add