code: @Then("^a Cassandra keyspace '(.+?)' does not exist$")
      public void assertKeyspaceOnCassandraDoesNotExist(String keyspace) {
          assertThat(commonspec.getCassandraClient().getKeyspaces()).as("The keyspace " + keyspace + " does not exist on cassandra").doesNotContain(keyspace);
      }
docs: Checks a keyspace does not exist in Cassandra.
  
  @param keyspace