### Question:
GpiSupport implements ITccInstrumentSupport { @Override public String getWavelength() { return "0.806"; } private  GpiSupport(ObservationEnvironment oe); static ITccInstrumentSupport create(ObservationEnvironment oe); @Override String getWavelength(); @Override String getPositionAngle(); @Override String getTccConfigInstrument(); @Override String getTccConfigInstrumentOrigin(); @Override String getFixedRotatorConfigName(); @Override String getChopState(); @Override void addGuideDetails(ParamSet p);  }### Answer:
@Test public void testWavelength() throws Exception { Gpi gpi = getInstrument(); setInstrument(gpi); assertEquals(getWavelength(getSouthResults()), "0.806"); }