* The maven super model

 * how parent poms are processed

 * the order in which elements in the POM are overridden

 * minimum element-set for a valid project pom


Maven super model

 Inheritance is recursive in Maven but there is a special model which is the implicit super parent in the lineage
 of models you may specify:

    @Deprecated
    public ArtifactMetadataRetrievalException(String message) {
        super(message, null, null);
    }

    /**
     * @param cause a cause
     * @deprecated use {@link #ArtifactMetadataRetrievalException(String, Throwable, Artifact)}
     */
    @Deprecated
    public ArtifactMetadataRetrievalException(Throwable cause) {
        super(null, cause, null);
    }

    /**
     * @param message a message

            implements PathScopeRegistry {

        @Inject
        public DefaultPathScopeRegistry(List<PathScopeProvider> providers) {
            super(
                    providers,
                    PathScope.MAIN_COMPILE,
                    PathScope.MAIN_RUNTIME,
                    PathScope.TEST_COMPILE,
                    PathScope.TEST_RUNTIME);
        }

            MojoDescriptor mojoDescriptor, ClassRealm pluginRealm, String message, Throwable e) {
        super(mojoDescriptor, message, e);

        this.pluginRealm = pluginRealm;
    }

    public PluginContainerException(
            MojoDescriptor mojoDescriptor, ClassRealm pluginRealm, String message, ComponentLookupException e) {
        super(mojoDescriptor, message, e);

        this.pluginRealm = pluginRealm;
    }

 */
@Deprecated
public class RepositoryMetadataDeploymentException extends Throwable {
    public RepositoryMetadataDeploymentException(String message) {
        super(message);
    }

    public RepositoryMetadataDeploymentException(String message, Exception e) {
        super(message, e);
    }

 *
 */
public class BeanConfigurationException extends Exception {

    public BeanConfigurationException(String message) {
        super(message);
    }

    public BeanConfigurationException(String message, Throwable cause) {
        super(message, cause);
    }

 *
 */
public class RepositoryMetadataStoreException extends Exception {
    public RepositoryMetadataStoreException(String message) {
        super(message);
    }

    public RepositoryMetadataStoreException(String message, Exception e) {
        super(message, e);
    }

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

    /**
     * @param e the {@link Exception}
     */
    public LookupException(Exception e) {
        super(e);
    }

    public DuplicateProjectException(String message, Exception e) {
        super(message, e);
        this.projectId = null;
        this.existingProjectFile = null;
        this.conflictingProjectFile = null;
    }

    public DuplicateProjectException(
            String projectId, File existingProjectFile, File conflictingProjectFile, String message) {
        super(message);
        this.projectId = projectId;

            }

            return metadata != null && metadata.toString().equals(node2.metadata.toString());
        } else {
            return super.equals(obj);
        }
    }

    @Override
    public int hashCode() {
        if (metadata == null) {
            return super.hashCode();
        }

        return metadata.toString().hashCode();
    }