code: void defaults () {
  		minWidth = new MinWidthValue<C, T>(layout.toolkit);
  		minHeight =new MinHeightValue<C, T>(layout.toolkit);
  		prefWidth = new PrefWidthValue<C, T>(layout.toolkit);
  		prefHeight = new PrefHeightValue<C, T>(layout.toolkit);
  		maxWidth = new MaxWidthValue<C, T>(layout.toolkit);
  		maxHeight = new MaxHeightValue<C, T>(layout.toolkit);
  		spaceTop = new FixedValue<C, T>(layout.toolkit,0);
  		spaceLeft = new FixedValue<C, T>(layout.toolkit,0);
  		spaceBottom = new FixedValue<C, T>(layout.toolkit,0);
  		spaceRight = new FixedValue<C, T>(layout.toolkit,0);
  		padTop = new FixedValue<C, T>(layout.toolkit,0);
  		padLeft = new FixedValue<C, T>(layout.toolkit,0);
  		padBottom = new FixedValue<C, T>(layout.toolkit,0);
  		padRight = new FixedValue<C, T>(layout.toolkit,0);
  		fillX = 0f;
  		fillY = 0f;
  		align = CENTER;
  		expandX = 0;
  		expandY = 0;
  		ignore = false;
  		colspan = 1;
  		uniformX = null;
  		uniformY = null;
  	}
docs: Set all constraints to cell default values.