}

    def formatsSignatureForWildcardType() {
        type.setWildcard()

        expect:
        type.signature == '?'
    }

    def formatsSignatureForWildcardWithUpperBound() {
        type.setUpperBounds(new TypeMetaData('OtherType'))

        expect:
        type.signature == '? extends OtherType'
    }

    def formatsSignatureForWildcardWithLowerBound() {