private static void assertMetaDataParsedCorrectly(DataFrame df) { Map<String, String> dataFrameMetaData = df.getMetaData(); assertEquals(1, dataFrameMetaData.size()); assertEquals(Option.of("netzwerg"), dataFrameMetaData.get("author")); Map<String, String> columnMetaData = df.getColumn(df.getColumnId(2, ColumnType.DOUBLE)).getMetaData(); assertEquals(1, columnMetaData.size()); assertEquals(Option.of("m"), columnMetaData.get("unit")); }