() -> projectBuilder.build(Collections.singletonList(pomFile), false, configuration));
        assertEquals(1, pex.getResults().size());
        assertNotNull(pex.getResults().get(0).getPomFile());
        assertTrue(pex.getResults().get(0).getProblems().size() > 0);
        ProjectBuildingResultWithProblemMessageAssert.assertThat(
                        pex.getResults().get(0))

            return null;
        }

        String message = System.lineSeparator()
                + "The project " + (result.getProjectId().isEmpty() ? "" : result.getProjectId() + " ")
                + "(" + result.getPomFile() + ") has "
                + children.size() + " error" + (children.size() == 1 ? "" : "s");

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

    private ProjectBuildingException transformError(ProjectBuildingException e) {
        if (e.getCause() instanceof ModelBuildingException) {
            return new InvalidProjectModelException(e.getProjectId(), e.getMessage(), e.getPomFile());
        }

        return e;
    }

    @Override
    public MavenProject build(File pom, ProjectBuilderConfiguration configuration) throws ProjectBuildingException {

     * Gets the POM file of the project to build.
     *
     * @return The POM file of the project or {@code null} if not applicable (i.e. when processing a POM from the
     *         repository).
     */
    File getPomFile();

    /**
     * Sets the POM file of the project to build. Note that providing the path to a POM file via this method will make