@Test
    void number_is_allowed_as_non_leading_char() throws IOException, DefParser.DefParserException {
        StringBuilder sb = createDefTemplate();
        String line = "package=a.b.c2\n";
        sb.append(line);
        createParser(sb.toString()).parse();
    }
Tests setting explicit java package in the def file.

@author gjoranv
configgen/src/test/java/com/yahoo/config/codegen/DefParserPackageTest.java