### Question:
BinaryField implements FieldType<byte[]> { @Override public byte[] getDefaultValue() { return null; } BinaryField(Types type);  BinaryField(Types type, String lengthString); @Override Types getType(); long getLength(); @Override byte[] getDefaultValue(); @Override boolean hasDefaultValue(); @Override byte[] convert(Object objValue); @Override JSONObject toJson();  }### Answer:
@Test public void testGetDefaultValue() throws OperationException { System.out.println("getDefaultValue"); BinaryField instance = new BinaryField(Types.BLOB); assertEquals(null, instance.getDefaultValue()); instance = new BinaryField(Types.BLOB, "100K"); assertEquals(null, instance.getDefaultValue()); }