.map(org.apache.maven.api.services.Source::getPath)
                        .orElse(null))
                .filter(Objects::nonNull)
                .findFirst()
                .orElseGet(() -> doLocateExistingPom(projectDirectory));
        if (pom != null && !pom.equals(projectDirectory) && !pom.getParent().equals(projectDirectory)) {

                        .findFirst()
                        .map(project -> project.getBuild().getDirectory())
                        .map(Paths::get)
                        .orElseGet(() -> root.resolve("target"))
                        .resolve(PROJECT_LOCAL_REPO);
            } else {
                return root.resolve("target").resolve(PROJECT_LOCAL_REPO);
            }
        }

  /**
   * Returns the contained instance if it is present; {@code supplier.get()} otherwise.
   *
   * <p><b>Comparison to {@code java.util.Optional}:</b> this method is similar to Java 8's {@code
   * Optional.orElseGet}, except when {@code supplier} returns {@code null}. In this case this
   * method throws an exception, whereas the Java 8+ method returns the {@code null} to the caller.
   *

  /**
   * Returns the contained instance if it is present; {@code supplier.get()} otherwise.
   *
   * <p><b>Comparison to {@code java.util.Optional}:</b> this method is similar to Java 8's {@code
   * Optional.orElseGet}, except when {@code supplier} returns {@code null}. In this case this
   * method throws an exception, whereas the Java 8+ method returns the {@code null} to the caller.
   *

            validateOptionalProfiles(session, request.getProfileActivation());

            LifecycleStarter lifecycleStarter = lookup.lookupOptional(LifecycleStarter.class, request.getBuilderId())
                    .orElseGet(() -> lookup.lookup(LifecycleStarter.class));

            lifecycleStarter.execute(session);

            validateOptionalProjects(request, session);