class GetGroupMemberAction extends RobotAction {

    @Override
    public boolean isTransactionAction() {
        return true;
    }

    @Override
    public boolean action(Request request, Response response) {<FILL_FUNCTION_BODY>}
}

        if (request.getNettyRequest() instanceof FullHttpRequest) {
            InputGetGroupMember input = getRequestBody(request.getNettyRequest(), InputGetGroupMember.class);
            String robotId = robot.getUid();
            if (input != null
                && (!StringUtil.isNullOrEmpty(input.getGroupId()))
                && (!StringUtil.isNullOrEmpty(input.getMemberId()))) {

                List<WFCMessage.GroupMember> members = new ArrayList<>();
                ErrorCode errorCode = messagesStore.getGroupMembers(null, input.getGroupId(), 0, members);
                RestResult result;
                if (errorCode != ErrorCode.ERROR_CODE_SUCCESS) {
                    result = RestResult.resultOf(errorCode);
                } else {
                    WFCMessage.GroupMember groupMember = null;
                    boolean isInGroup = false;
                    for (WFCMessage.GroupMember member : members) {
                        if (member.getType() == ProtoConstants.GroupMemberType.GroupMemberType_Removed) {
                            continue;
                        }
                        if(member.getMemberId().equals(robotId)) {
                            isInGroup = true;
                            if(groupMember != null) {
                                break;
                            }
                        }
                        if(member.getMemberId().equals(input.getMemberId())) {
                            groupMember = member;
                            if(isInGroup) {
                                break;
                            }
                        }
                    }
                    if(!isInGroup) {
                        result = RestResult.resultOf(ErrorCode.ERROR_CODE_NOT_IN_GROUP);
                    } else {
                        if(groupMember == null) {
                            result = RestResult.resultOf(ErrorCode.ERROR_CODE_NOT_EXIST);
                        } else {
                            PojoGroupMember pm = new PojoGroupMember();
                            pm.setMember_id(groupMember.getMemberId());
                            pm.setAlias(groupMember.getAlias());
                            pm.setType(groupMember.getType());
                            pm.setExtra(groupMember.getExtra());
                            pm.setCreateDt(groupMember.getCreateDt());
                            result = RestResult.ok(pm);
                        }
                    }
                }

                setResponseContent(result, response);
            } else {
                setResponseContent(RestResult.resultOf(ErrorCode.INVALID_PARAMETER), response);
            }

        }
        return true;
    
<methods>public non-sealed void <init>() ,public cn.wildfirechat.common.ErrorCode preAction(com.xiaoleilu.loServer.handler.Request, com.xiaoleilu.loServer.handler.Response) <variables>protected static final Logger LOG,protected cn.wildfirechat.proto.WFCMessage.Robot robot