keyword_a asdf {
    keyword_b {
        keyword_c {
             keyword_d {
             }
        }
    }
}

    def hoverText(Keyword k) {
        val result = switch (k) {
            case keyword_a: HoverTexts.KEYWORD_A
            case keyword_b: HoverTexts.KEYWORD_B
            case keyword_c: HoverTexts.KEYWORD_C
            case keyword_d: HoverTexts.KEYWORD_D
        }
        return result
    }

if (o instanceof Keyword)
    return hoverTexts.hover((Keyword) o);
if (o instanceof KEYWORD_CImpl) //debugging showed it to be that type
    return hoverTexts.hover((KEYWORD_CImpl) o);