### Question:
CallArgumentsToByteArray { public byte[] getToAddress() { byte[] toAddress = null; if (args.to != null) { toAddress = stringHexToByteArray(args.to); } return toAddress; } CallArgumentsToByteArray(Web3.CallArguments args); byte[] getGasPrice(); byte[] getGasLimit(); byte[] getToAddress(); byte[] getValue(); byte[] getData(); UscAddress getFromAddress();  }### Answer:
@Test public void getToAddressWhenValueIsNull() throws Exception { Web3.CallArguments args = new Web3.CallArguments(); CallArgumentsToByteArray byteArrayArgs = new CallArgumentsToByteArray(args); Assert.assertNull(byteArrayArgs.getToAddress()); }