public static <K, V> ImmutableMap<K, V> of(K k1, V v1, K k2, V v2) {
    return new RegularImmutableMap<K, V>(entryOf(k1, v1), entryOf(k2, v2));
  }

  public static <K, V> ImmutableMap<K, V> of(K k1, V v1, K k2, V v2, K k3, V v3) {
    return new RegularImmutableMap<K, V>(entryOf(k1, v1), entryOf(k2, v2), entryOf(k3, v3));
  }

  public static <K, V> ImmutableMap<K, V> of(K k1, V v1, K k2, V v2, K k3, V v3, K k4, V v4) {

      k1 *= C1;
      k1 = Long.rotateLeft(k1, 31);
      k1 *= C2;
      return k1;
    }

    private static long mixK2(long k2) {
      k2 *= C2;
      k2 = Long.rotateLeft(k2, 33);
      k2 *= C1;
      return k2;
    }
  }

  private static final long serialVersionUID = 0L;

                .filter(e -> e.getValue() != null)
                .collect(Collectors.toMap(
                        e -> String.valueOf(e.getKey()), e -> String.valueOf(e.getValue()), (k1, k2) -> k2));
    }

    private String getUserAgent() {
        String version = runtimeInformation.getMavenVersion();
        version = version.isEmpty() ? version : "/" + version;

   * to the set.
   *
   * <p><b>Warning:</b> This method assumes that for any instance {@code k} of key type {@code K},
   * {@code k.equals(k2)} implies that {@code k2} is also of type {@code K}. Using a key type for
   * which this may not hold, such as {@code ArrayList}, may risk a {@code ClassCastException} when
   * calling methods on the resulting map view.
   *

   * to the set.
   *
   * <p><b>Warning:</b> This method assumes that for any instance {@code k} of key type {@code K},
   * {@code k.equals(k2)} implies that {@code k2} is also of type {@code K}. Using a key type for
   * which this may not hold, such as {@code ArrayList}, may risk a {@code ClassCastException} when
   * calling methods on the resulting map view.
   *

-family","font-size","font-size-adjust","font-stretch","font-style","font-variant","font-weight","fx","fy","g1","g2","glyph-name","glyphref","gradientunits","gradienttransform","height","href","id","image-rendering","in","in2","intercept","k","k1","k2","k3","k4","kerning","keypoints","keysplines","keytimes","lang","lengthadjust","letter-spacing","kernelmatrix","kernelunitlength","lighting-color","local","marker-end","marker-mid","marker-start","markerheight","markerunits","markerwidth","maskcont...

  }

  private static class TwoTypeArgs<K, V> {
    @SuppressWarnings("ClassCanBeStatic") // We want to test an inner class.
    class InnerType<K2, V2> {}
  }

  private static class StringForFirstTypeArg<V> extends TwoTypeArgs<String, V> {
    class StringInnerType<V2> extends InnerType<String, V2> {}
  }

  }

  private static class TwoTypeArgs<K, V> {
    @SuppressWarnings("ClassCanBeStatic") // We want to test an inner class.
    class InnerType<K2, V2> {}
  }

  private static class StringForFirstTypeArg<V> extends TwoTypeArgs<String, V> {
    class StringInnerType<V2> extends InnerType<String, V2> {}
  }