try {
      assertNull(
          "remove(null) should return null or throw NullPointerException", getMap().remove(null));
    } catch (NullPointerException tolerated) {
    }
    expectUnchanged();
  }

  @MapFeature.Require({SUPPORTS_REMOVE, ALLOWS_NULL_KEY_QUERIES})
  public void testRemove_nullSupportedMissing() {
    assertNull("remove(null) should return null", getMap().remove(null));
    expectUnchanged();
  }

    }

    @Override
    public Set<Artifact> createArtifacts(MavenProject project) throws InvalidDependencyVersionException {
        return createArtifacts(artifactFactory, project.getDependencies(), null, null, project);
    }

    public static Set<Artifact> createArtifacts(
            ArtifactFactory artifactFactory,
            List<Dependency> dependencies,
            String inheritedScope,

    assertThrows(NullPointerException.class, () -> table.put(null, 2, cellValue('d')));
    assertThrows(NullPointerException.class, () -> table.put("cat", null, cellValue('d')));
    if (supportsNullValues()) {
      assertThat(table.put("cat", 2, null)).isNull();
      assertTrue(table.contains("cat", 2));
    } else {
      assertThrows(NullPointerException.class, () -> table.put("cat", 2, null));
    }
    assertSize(3);
  }

     * from the runtime environment like {@link System#getProperties()} and environment variables.
     *
     * @param systemProperties The system properties, may be {@code null}.
     * @return This request, never {@code null}.
     */
    ProjectBuildingRequest setSystemProperties(Properties systemProperties);

    /**

     */
    public StringSource(CharSequence content) {
        this(content, null);
    }

    /**
     * Creates a new source backed by the specified string.
     *
     * @param content The String representation, may be empty or {@code null}.
     * @param location The location to report for this use, may be {@code null}.
     */

  public void testToString_addValueWithNullValue() {
    String result =
        MoreObjects.toStringHelper(new TestClass())
            .addValue(null)
            .addValue("Hello")
            .addValue(null)
            .toString();
    String expected = "TestClass{null, Hello, null}";

    assertEquals(expected, result);
  }

  public void testToStringLenient_addValueWithNullValue() {
    String result =

      if (entry.getKey() == null) {
        tryDrainReferenceQueues();
        return null;
      }
      V value = entry.getValue();
      if (value == null) {
        tryDrainReferenceQueues();
        return null;
      }

      return value;
    }

    /**
     * Performs routine cleanup following a read. Normally cleanup happens during writes, or from

    assertThat(expected).hasMessageThat().isEqualTo("null");
  }

  public void testCheckArgument_nullMessageWithArgs_failure() {
    IllegalArgumentException e =
        assertThrows(IllegalArgumentException.class, () -> checkArgument(false, null, "b", "d"));
    assertThat(e).hasMessageThat().isEqualTo("null [b, d]");
  }

            session.getMavenSession().getAllProjects().stream()
                    .flatMap(this::getProjectArtifacts)
                    .filter(a -> Objects.equals(id, id(a)))
                    .forEach(a -> a.setFile(path != null ? path.toFile() : null));
        }
        if (path == null) {
            paths.remove(id);
        } else {
            paths.put(id, path);
        }
    }

    /**

        Collection<String> repoIds = new HashSet<>();

        if (dominantRepositories != null) {
            for (ArtifactRepository repository : dominantRepositories) {
                repoIds.add(repository.getId());
                artifactRepositories.add(repository);
            }
        }

        if (recessiveRepositories != null) {
            for (ArtifactRepository repository : recessiveRepositories) {