@Override public String toString() { String familiesString = toFamiliesString(families, family, qualifier); String[] params = new String[] { namespace != null ? "namespace=" + namespace : null, tableName != null ? "table=" + tableName.getNameWithNamespaceInclAsString() : null, familiesString.length() > 0 ? "family=" + familiesString : null, extraParams.isEmpty() ? null : concatenateExtraParams() }; return Joiner.on(",").skipNulls().join(params); }