code: public void assertHasSize(Description description, int[] actual, int expectedSize) {
      arrays.assertHasSize(description, actual, expectedSize);
    }
docs: Asserts that the number of elements in the given array is equal to the expected one.
  
  @param description contains information about the assertion.
  @param actual the given array.
  @param expectedSize the expected size of {@code actual}.
  @throws AssertionError if the given array is {@code null}.
  @throws AssertionError if the number of elements in the given array is different than the expected one.