if (defaultPlugins == null) {
            problems.add(new ModelProblemCollectorRequest(Severity.ERROR, Version.BASE)
                    .setMessage("Unknown packaging: " + packaging)
                    .setLocation(model.getLocation("packaging")));
        } else if (!defaultPlugins.isEmpty()) {
            Model lifecycleModel = new Model();

        this.exception = exception;
        return this;
    }

    public String getMessage() {
        return message;
    }

    public ModelProblemCollectorRequest setMessage(String message) {
        this.message = message;
        return this;
    }

    public InputLocation getLocation() {
        return location;
    }

                    if (response != null) {
                        // Process each notification message
                        for (WitnessAsyncNotifyMessage.WitnessNotificationMessage message : response.getMessages()) {
                            processAsyncNotificationMessage(registration, message);
                        }
                    }

                        } catch (InterpolationException e) {
                            problems.add(new ModelProblemCollectorRequest(Severity.ERROR, Version.BASE)
                                    .setMessage(e.getMessage())
                                    .setException(e));
                        }
                        cache.put(value, c);
                    }
                    return c;
                }

        }

        buffer.append(' ').append(message);

        // CHECKSTYLE_OFF: LineLength
        problems.add(new ModelProblemCollectorRequest(severity, version)
                .setMessage(buffer.toString())
                .setLocation(getLocation(fieldName, tracker)));
        // CHECKSTYLE_ON: LineLength
    }

        String src = source.getMessage();
        if (src != null) {
            if (sourceDominant || target.getMessage() == null) {
                target.setMessage(src);
                target.setLocation("message", source.getLocation("message"));
            }
        }
    }

    protected void mergeDeploymentRepository(
            DeploymentRepository target,