@Override
	public void execute(String commandName, BufferedReader reader, BufferedWriter writer)
			throws Py4JException, IOException {
		String returnCommand = null;
		String subCommand = safeReadLine(reader);

		if (subCommand.equals(MEMORY_DEL_SUB_COMMAND_NAME)) {
			returnCommand = deleteObject(reader);
		} else {
			returnCommand = Protocol.getOutputErrorCommand("Unknown Memory SubCommand Name: " + subCommand);
		}
		logger.finest("Returning command: " + returnCommand);
		writer.write(returnCommand);
		writer.flush();
	}
@Test
	public void testDelete() {
		String inputCommand = "d\n" + target + "\ne\n";
		try {
			assertTrue(gateway.getBindings().containsKey(target));
			command.execute("m", new BufferedReader(new StringReader(inputCommand)), writer);
			assertEquals("!yv\n", sWriter.toString());
			assertFalse(gateway.getBindings().containsKey(target));
			command.execute("m", new BufferedReader(new StringReader(inputCommand)), writer);
			assertEquals("!yv\n!yv\n", sWriter.toString());
		} catch (Exception e) {
			e.printStackTrace();
			fail();
		}
	}