void (UnknownType type) { final TypeModel nested = type.type; if (nested != null) { if (type.bitwiseOrUnionAllowed) { nested.accept(this); add(HtmlChunk.raw(" | " + PyNames.UNKNOWN_TYPE)); } else { add(HtmlChunk.raw("Union[")); // NON-NLS nested.accept(this); add(HtmlChunk.raw(", " + PyNames.UNKNOWN_TYPE + "]")); } } }