### Question:
LocalApiServerHandler extends SimpleChannelInboundHandler<Object> { @Override public void channelRead0(ChannelHandlerContext ctx, Object msg) { LoggingService.logDebug(MODULE_NAME, "Start channel initializing"); try { if (msg instanceof FullHttpRequest) { ByteBuf content = null; try { FullHttpRequest request = (FullHttpRequest) msg; this.request = request; content = request.content(); this.content = new byte[content.readableBytes()]; content.readBytes(this.content); handleHttpRequest(ctx); } finally { release(content); release(msg); } } else if (msg instanceof HttpRequest) { if (this.baos == null) this.baos = new ByteArrayOutputStream(); request = (HttpRequest) msg; } else if (msg instanceof WebSocketFrame) { try { String mapName = findContextMapName(ctx); if (mapName != null && mapName.equals("control")) { ControlWebsocketHandler controlSocket = new ControlWebsocketHandler(); controlSocket.handleWebSocketFrame(ctx, (WebSocketFrame) msg); } else if (mapName != null && mapName.equals("message")) { MessageWebsocketHandler messageSocket = new MessageWebsocketHandler(); messageSocket.handleWebSocketFrame(ctx, (WebSocketFrame) msg); } else { LoggingService.logError(MODULE_NAME, "Cannot initiate real-time service: Context not found", new AgentSystemException("Cannot initiate real-time service: Context not found")); } } finally { release(msg); } } else if (msg instanceof HttpContent) { HttpContent httpContent = (HttpContent) msg; ByteBuf content = httpContent.content(); if (content.isReadable()) { try { content.readBytes(this.baos, content.readableBytes()); } catch (IOException e) { String errorMsg = "Out of memory"; LoggingService.logError(MODULE_NAME, errorMsg, e); ByteBuf errorMsgBytes = ctx.alloc().buffer(); errorMsgBytes.writeBytes(errorMsg.getBytes(UTF_8)); sendHttpResponse(ctx, request, new DefaultFullHttpResponse(HTTP_1_1, HttpResponseStatus.NOT_FOUND, errorMsgBytes)); return; } finally { release(content); } } if (msg instanceof LastHttpContent) { this.content = baos.toByteArray(); baos = null; try { handleHttpRequest(ctx); } finally { release(request); } } } } catch (Exception e) { LoggingService.logError(MODULE_NAME, "Failed to initialize channel for the request", e); } LoggingService.logDebug(MODULE_NAME, "Finished channel initializing"); } LocalApiServerHandler(EventExecutorGroup executor); @Override void channelRead0(ChannelHandlerContext ctx, Object msg); @Override void channelReadComplete(ChannelHandlerContext ctx); @Override void exceptionCaught(ChannelHandlerContext ctx, Throwable cause);  }### Answer:
@Test public void channelRead0() { }