Problem call document generation.

```
$ haxelib run dox -i ./classes/CodeCostsCalculator.hx -o docs
Parsing ./classes/CodeCostsCalculator.hx
Called from ? line 1
Called from dox/Dox.hx line 120
Called from dox/Dox.hx line 157
Called from dox/Dox.hx line 146
Called from C:\Users\fischej\AppData\Roaming/haxe/versions/4.2.3/std/haxe/rtti/XmlParser.hx line 92
Uncaught exception - Invalid field access : nodeType
```

