final String mdx = "[Foo].&Key1&Key2.&[Key3]&Key4&[5]";
assertParseExpr(mdx, mdx, false);
TestParser p = createParser();
final String mdxQuery = wrapExpr(mdx);
new JavaccParserValidatorImpl(p).parseInternal(
null, mdxQuery, false, funTable, false);
assertEquals(1, p.getFormulas().length);
Formula withMember = p.getFormulas()[0];
final Exp expr = withMember.getExpression();
Id id = (Id) expr;