### Question:
JcrJsonAdapter extends TypeAdapter<Node> { @Override public Node read(JsonReader reader) throws IOException { throw new UnsupportedOperationException("JcrJsonAdaper.read(JsonReader) is not supported yet."); }  @Override void write(JsonWriter writer, Node t); @Override Node read(JsonReader reader);  }### Answer:
@Test(expected = UnsupportedOperationException.class) public void testRead() throws IOException { JcrJsonAdapter instance = new JcrJsonAdapter(); instance.read(null); }