CollectConstantDefinitions collectConstantDefinitionsPass = new CollectConstantDefinitions(
cssTree);
collectConstantDefinitionsPass.runPass();
ReplaceConstantReferences replaceConstantReferences = new ReplaceConstantReferences(cssTree,
collectConstantDefinitionsPass.getConstantDefinitions(), true, errorManager, false);
replaceConstantReferences.runPass();
new ImageSpriteCreator(cssTree.getMutatingVisitController(), context, errorManager).runPass();
Map<String, GssFunction> gssFunctionMap = new GwtGssFunctionMapProvider(context).get();
new ResolveCustomFunctionNodes(cssTree.getMutatingVisitController(), errorManager,