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);
    }

        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());
    }

        // Cyclic Dependency Error

        if (result.hasCircularDependencyExceptions()) {
            throw result.getCircularDependencyException(0);
        }

        // Version Range Violation

        if (result.hasVersionRangeViolations()) {
            throw result.getVersionRangeViolation(0);
        }

        // Transfer Error

        if (result.hasErrorArtifactExceptions()) {

     *            {@link ModelProblem.Severity#ERROR}.
     * @param source The source of the problem, may be {@code null}.
     * @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.

                    throw e;
                } catch (TransferFailedException e) {
                    String error = (e.getMessage() != null)
                            ? e.getMessage()
                            : e.getClass().getSimpleName();
                    updateCheckManager.touch(artifact, repository, error);
                    throw e;
                }

                a = factory.createBuildArtifact("org.apache.maven", "h", "1.0", "jar");
                dependencies.add(a);
            } catch (Exception e) {
                throw new ArtifactMetadataRetrievalException("Error retrieving metadata", e, a);
            }
        }

        if ("i".equals(artifact.getArtifactId())) {
            Artifact a = null;
            try {

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...

        List<Toolchain> toolchains = new ArrayList<>();

        if (models != null) {
            ToolchainFactory fact = factories.get(type);

            if (fact == null) {
                logger.error(
                        "Missing toolchain factory for type: " + type + ". Possibly caused by misconfigured project.");
            } else {
                for (ToolchainModel model : models) {
                    try {

@Experimental
public class ArtifactDeployerException extends MavenException {

    /**
     *
     */
    private static final long serialVersionUID = 7421964724059077698L;

    /**
     * @param message the message of the error
     * @param e {@link Exception}
     */
    public ArtifactDeployerException(String message, Exception e) {
        super(message, e);
    }

  <version>0.1</version>
  <packaging>jar</packaging>

  <name>Maven Integration Test :: MNG-4193</name>
  <description>
    Test that multiple artifact repository declarations with the same id cause a validation error.
  </description>

  <repositories>
    <repository>
      <id>one</id>
      <url>https://repo1.maven.org/maven2</url>
    </repository>
    <repository>
      <id>one</id>