private static Map parseExpressionDocumentation( InputStream docStream )
throws IOException, XmlPullParserException
{
Reader reader = new BufferedReader( ReaderFactory.newXmlReader( docStream ) );
ParamdocXpp3Reader paramdocReader = new ParamdocXpp3Reader();
ExpressionDocumentation documentation = paramdocReader.read( reader, true );
List expressions = documentation.getExpressions();
Map bySyntax = new HashMap();