### Question:
XMLChannel extends BaseChannel { protected int getHeaderLength() { return 0; } XMLChannel();  XMLChannel(String host, int port, ISOPackager p);  XMLChannel(ISOPackager p);  XMLChannel(ISOPackager p, ServerSocket serverSocket); void disconnect();  }### Answer:
@Test public void testGetHeaderLength() throws Throwable { XMLChannel xMLChannel = new XMLChannel(); int result = xMLChannel.getHeaderLength(); assertEquals(0, result, "result"); }