code: public <V> void assertContainsValue(Description description, Map<?, ?> actual, V value) {
      assertNotNull(description, actual);
      if (!actual.containsValue(value)) {
        throw failures.failure(description, shouldContainValue(actual, value));
      }
    }
docs: Asserts that the actual map contain the given value.
  
  @param description contains information about the assertion.
  @param actual the given {@code Map}.
  @param value the given value
  @throws AssertionError if the actual map is {@code null}.
  @throws AssertionError if the actual map not contains the given value.