### Question:
PropertiesFileConverter implements ValueConverter<Map<String, String>> { @Override public String valuePattern() { return "filename"; }  @Override Map<String, String> convert( String value ); @Override Class<Map<String, String>> valueType(); @Override String valuePattern();  }### Answer:
@Test public void testValuePattern() { PropertiesFileConverter pfc = new PropertiesFileConverter(); assertEquals( "filename", pfc.valuePattern() ); }