docs: function resolveClient(c,arg)
  		{
  			if(typeof c.y === "function")
  			{
  				try {
  						var yret = c.y.call(_undefined,arg);
  						c.p.resolve(yret);
  					}
  				catch(err) { c.p.reject(err) }
  			}
  			else
  				c.p.resolve(arg); // pass this along...
  		}