### Question:
PropertiesConfigIo implements ConfigIo { @Override public ConfigReader readFrom(File file) { return new PropertiesReader(file, fileFsReader); }  @Override ConfigReader readFrom(File file); @Override ConfigWriter writeTo(File file);  }### Answer:
@Test void test() { File file = classpathFile("configFormats/properties/propLine.properties"); assertEquals(expectedMap(), ioService.readFrom(file).propertiesAsMap()); }