// Ignore semanticProblems. They should have been collected during the semantic analysis phase already.
final Collection<ICompilerProblem> problems = new HashSet<ICompilerProblem>();
if (css == CSSDocumentCache.EMPTY_CSS_DOCUMENT)
return;
final IFlexProject flexProject = (IFlexProject)getProject();
final CSSCompilationSession session = node.getFileNode().getCSSCompilationSession();
if (session == null)
return;