return success(model, problemsList);
    }

    /**
     * Error with problems describing the cause
     *
     * @param problems
     */
    public static <T> Result<T> error(Iterable<? extends ModelProblem> problems) {
        return error(null, problems);
    }

    public static <T> Result<T> error(T model) {
        return error(model, Collections.emptyList());
    }

        if (isErrorEnabled()) {
            logger.error(toString(content));
        }
    }

    @Override
    public void error(CharSequence content, Throwable error) {
        if (isErrorEnabled()) {
            logger.error(toString(content), error);
        }
    }

    @Override
    public void error(Throwable error) {
        logger.error("", error);
    }

     * @param lineNumber The one-based index of the line containing the error or {@code -1} if unknown.
     * @param columnNumber The one-based index of the column containing the error or {@code -1} if unknown.
     * @param cause The nested cause of this error, may be {@code null}.
     */
    public MetadataParseException(String message, int lineNumber, int columnNumber, Throwable cause) {
        super(message);

    }

    public void setWhy(String why) {
        this.why = why;
    }

    public String getError() {
        return error;
    }

    public void setError(String error) {
        this.error = error;
    }

    public boolean isError() {
        return error == null;
    }

    public String getDependencyConflictId() {
        return groupId + ":" + artifactId;
    }

                }

                props.setProperty(key, Long.toString(System.currentTimeMillis()));

                if (error != null) {
                    props.setProperty(key + ERROR_KEY_SUFFIX, error);
                } else {
                    props.remove(key + ERROR_KEY_SUFFIX);
                }

                getLogger().debug("Writing resolution-state to: " + touchfile);

void trace(Object, Throwable); public void debug(Object); public void debug(Object, Throwable); public void info(Object); public void info(Object, Throwable); public void warn(Object); public void warn(Object, Throwable); public void error(Object); public void error(Object, Throwable); public void fatal(Object); public void fatal(Object, Throwable); public org.apache.log4j.Category getCategory(); public boolean isDebugEnabled(); public boolean isErrorEnabled(); public boolean isFatalEnabled(); public...

    public static final int TRANSFER_COMPLETED = 2;

    /**
     * A transfer is in progress.
     */
    public static final int TRANSFER_PROGRESS = 3;

    /**
     * An error occurred during transfer
     */
    public static final int TRANSFER_ERROR = 4;

    /**
     * Indicates GET transfer  (from the repository)
     */
    public static final int REQUEST_GET = 5;

    /**

                + "(" + result.getPomFile() + ") has "
                + children.size() + " error" + (children.size() == 1 ? "" : "s");

        return new ExceptionSummary(null, message, null, children);
    }

    private ExceptionSummary handle(ModelProblem problem, String projectId) {
        if (ModelProblem.Severity.ERROR.compareTo(problem.getSeverity()) >= 0) {
            String message = problem.getMessage();

        } catch (Exception e) {
            event.problems()
                    .add(
                            BuilderProblem.Severity.ERROR,
                            ModelProblem.Version.BASE,
                            "Invalid plugin repository: " + e.getMessage(),
                            e);
        }

     * @throws ArtifactInstallerException in case of an error
     * @throws IllegalArgumentException in case {@code request} is {@code null}
     */
    void install(@Nonnull ArtifactInstallerRequest request);

    /**
     * @param session the repository session
     * @param artifact the {@link Artifact} to install
     * @throws ArtifactInstallerException In case of an error which can be the a given artifact cannot be found or the