getSupportedNodeType() >> TestNode
            toString() >> "testConverter2"
        }

        when:
        new ToPlannedNodeConverterRegistry([testConverter1, testConverter2])
        then:
        def e = thrown(IllegalStateException)
        e.message == "Converter testConverter1 overlaps by supported node type with converter testConverter2"
    }

    static class TestNode extends Node {
        @Override