@Override
    public String toString() {
        return "ScyllaDbDoc{" +
               "description='" + description + '\'' +
               ", connection='" + connection + '\'' +
               ", keyspace='" + keyspace + '\'' +
               ", keyspaceCql='" + keyspaceCql + '\'' +
               '}';
    }
@return A new builder for creating a {@link DocRef} for this document's type.
stroom-core-shared/src/main/java/stroom/state/shared/ScyllaDbDoc.java