public static String getDataSourceUnitsNode(final String databaseName) {
        return String.join("/", getMetaDataNode(), databaseName, DATA_SOURCES_NODE, DATA_SOURCE_UNITS_NODE);
    }
@Test
    void assertGetMetaDataDataSourcesNode() {
        assertThat(DataSourceMetaDataNode.getDataSourceUnitsNode("foo_db"), is("/metadata/foo_db/data_sources/units"));
    }