result.setRepository(resolveResult.getRepository());
            } catch (ArtifactResolutionException e) {
                if (e.getCause() instanceof ArtifactNotFoundException) {
                    missingDescriptor(session, trace, a, (Exception) e.getCause());
                    if ((getPolicy(session, a, request) & ArtifactDescriptorPolicy.IGNORE_MISSING) != 0) {
                        return null;

        initRepoSession(configuration);

        try {
            return projectBuilder.build(pom, configuration).getProject();
        } catch (Exception e) {
            Throwable cause = e.getCause();
            if (cause instanceof ModelBuildingException) {
                String message = "In: " + pom + "\n\n";
                for (ModelProblem problem : ((ModelBuildingException) cause).getProblems()) {

            method.setAccessible(true);
            try {
                return method.invoke(getScopeState().scope(key, unscoped).get(), args);
            } catch (InvocationTargetException e) {
                throw e.getCause();
            }
        };
        Class<T> superType = (Class<T>) key.getTypeLiteral().getRawType();
        Class<?>[] interfaces = getInterfaces(superType);

        } catch (ComponentLookupException e) {
            Throwable cause = e.getCause();
            while (cause != null && !(cause instanceof LinkageError) && !(cause instanceof ClassNotFoundException)) {
                cause = cause.getCause();
            }

            if ((cause instanceof NoClassDefFoundError) || (cause instanceof ClassNotFoundException)) {

  private Object invokeGeneratorMethod(Method generator, Object... args) {
    try {
      return generator.invoke(this, args);
    } catch (InvocationTargetException e) {
      throwIfUnchecked(e.getCause());
      throw new RuntimeException(e.getCause());
    } catch (Exception e) {
      throwIfUnchecked(e);
      throw new RuntimeException(e);
    }
  }

  private Object invokeGeneratorMethod(Method generator, Object... args) {
    try {
      return generator.invoke(this, args);
    } catch (InvocationTargetException e) {
      throwIfUnchecked(e.getCause());
      throw new RuntimeException(e.getCause());
    } catch (Exception e) {
      throwIfUnchecked(e);
      throw new RuntimeException(e);
    }
  }

                throw new IllegalStateException("Unable to lookup " + RepositorySystem.class.getName());
            } catch (org.eclipse.aether.resolution.ArtifactResolutionException e) {
                if (e.getCause() instanceof org.eclipse.aether.transfer.ArtifactNotFoundException) {
                    throw new ArtifactNotFoundException(e.getMessage(), artifact, remoteRepositories, e);
                } else {

      throw new AssertionError(impossible);
    } catch (InvocationTargetException e) {
      logger.log(Level.WARNING, "Exception while invoking default constructor.", e.getCause());
      return arbitraryConstantInstanceOrNull(type);
    }
  }

  private static <T> @Nullable T arbitraryConstantInstanceOrNull(Class<T> type) {
    Field[] fields = type.getDeclaredFields();

      throw new AssertionError(impossible);
    } catch (InvocationTargetException e) {
      logger.log(Level.WARNING, "Exception while invoking default constructor.", e.getCause());
      return arbitraryConstantInstanceOrNull(type);
    }
  }

  private static <T> @Nullable T arbitraryConstantInstanceOrNull(Class<T> type) {
    Field[] fields = type.getDeclaredFields();

                    + "isCancelled() == true: "
                    + future,
                exception));
      }
      return new Failure(exception.getCause());
    } catch (CancellationException cancellation) {
      if (!wasCancelled) {
        return new Failure(
            new IllegalArgumentException(