### Question:
FastPropertiesImpl implements FastProperties { @Override public String getSlowLabel(final String label) { return SLOW + " " + label; }  @Override final List<String> getFastProperties(); @Override final List<String> getFastProperties(final String indexConfigFlagPropertyName); @Override final List<String> getFastProperties(final List<String> indexConfigFlagPropertyNames); List<String> getDeltaProperties(final Collection<String> fastProperties, final Collection<String> otherProperties); @Override String getFastLabel(final String label); @Override String getSlowLabel(final String label);  }### Answer:
@Test public void getSlowLabel() { final FastProperties fastProperties = ctx.getService(FastProperties.class); final String expected = FastProperties.SLOW + " I'm a slow property"; final String actual = fastProperties.getSlowLabel("I'm a slow property"); assertEquals(expected, actual); }