*
   * @since 20.0 (varargs overload since 2.0)
   */
  public static void checkArgument(
      boolean expression, String errorMessageTemplate, char p1, char p2) {
    if (!expression) {
      throw new IllegalArgumentException(lenientFormat(errorMessageTemplate, p1, p2));
    }
  }

  /**
   * Ensures the truth of an expression involving one or more parameters to the calling method.
   *

        assertNull(p1.getException());

        Problem p2 = collector.getProblems().get(1);
        assertEquals(Severity.WARNING, p2.getSeverity());
        assertEquals("", p2.getMessage());
        assertEquals(42, p2.getLineNumber());
        assertEquals(127, p2.getColumnNumber());
        assertEquals(e2, p2.getException());
    }

    @Test
    void testSetSource() {

    // ----------------------------------------------------------------------
    //
    // p4 inherits from p3
    // p3 inherits from p2
    // p2 inherits from p1
    // p1 inherits from p0
    // p0 inherits from super model
    //
    // or we can show it graphically as:
    //
    // p4 ---> p3 ---> p2 ---> p1 ---> p0 --> super model
    //
    // ----------------------------------------------------------------------

    @Test

    // ----------------------------------------------------------------------
    //
    // p4 inherits from p3
    // p3 inherits from p2
    // p2 inherits from p1
    // p1 inherits from p0
    // p0 inherits from super model
    //
    // or we can show it graphically as:
    //
    // p4 ---> p3 ---> p2 ---> p1 ---> p0 --> super model
    //
    // ----------------------------------------------------------------------

    @Test

pkg p2, func F //deprecated
pkg p2, func F() string
pkg p2, func G() Twoer
pkg p2, func NewError(string) error
pkg p2, type Twoer interface { PackageTwoMeth }
pkg p2, type Twoer interface, PackageTwoMeth //deprecated

        // Check p2 value for org name
        // ----------------------------------------------------------------------

        MavenProject p2 = getProject(projectFile("maven.t01", "p2"));

        assertEquals("p2-org", p2.getOrganization().getName());

        // ----------------------------------------------------------------------
        // Check p2 value for org name

    Predicate<Float> p2 = Predicates.compose(h, Functions.compose(g, f));

    // Might be nice (eventually) to have:
    //     assertEquals(p1, p2);

    // But for now, settle for this:
    assertEquals(p1.hashCode(), p2.hashCode());

    assertEquals(p1.apply(1.0f), p2.apply(1.0f));
    assertEquals(p1.apply(5.0f), p2.apply(5.0f));
  }

  public void testForPredicate() {

        int p1, p2, l1, l2;

        // if unsure return this method returns true

        p1 = path1.lastIndexOf('/');
        p2 = path2.lastIndexOf('/');
        l1 = path1.length() - p1;
        l2 = path2.length() - p2;

        // anything with dots voids comparison
        if ((l1 > 1 && path1.charAt(p1 + 1) == '.') || (l2 > 1 && path2.charAt(p2 + 1) == '.')) {
            return true;

    }

    private static boolean repositoryPolicyEquals(ArtifactRepositoryPolicy p1, ArtifactRepositoryPolicy p2) {
        if (p1 == p2) {
            return true;
        }

        return p1.isEnabled() == p2.isEnabled() && Objects.equals(p1.getUpdatePolicy(), p2.getUpdatePolicy());
    }

    private static boolean repositoriesEquals(List<ArtifactRepository> r1, List<ArtifactRepository> r2) {

    Predicate<Float> p2 = Predicates.compose(h, Functions.compose(g, f));

    // Might be nice (eventually) to have:
    //     assertEquals(p1, p2);

    // But for now, settle for this:
    assertEquals(p1.hashCode(), p2.hashCode());

    assertEquals(p1.apply(1.0f), p2.apply(1.0f));
    assertEquals(p1.apply(5.0f), p2.apply(5.0f));
  }

  public void testForPredicate() {