@Test
public void openToscaNodeTypesCorrectAtSimilarNamespacesWithUniqueness() {

    assertEquals("otntyIexample", this.configurationBasedNamespaceManager.getPrefix("http://opentosca.org/nodetypes/example"));
    assertEquals("otntyIexample1", this.configurationBasedNamespaceManager.getPrefix("http://opentosca.org/nodetypes/example/example"));
    // try again -> same prefixes have to be returned
    assertEquals("otntyIexample", this.configurationBasedNamespaceManager.getPrefix("http://opentosca.org/nodetypes/example"));
    assertEquals("otntyIexample1", this.configurationBasedNamespaceManager.getPrefix("http://opentosca.org/nodetypes/example/example"));
}