return RegularImmutableMap.create(
        10,
        new Object[] {
          k1, v1, k2, v2, k3, v3, k4, v4, k5, v5, k6, v6, k7, v7, k8, v8, k9, v9, k10, v10
        });
  }

  // looking for of() with > 10 entries? Use the builder or ofEntries instead.

  /**
   * Returns an immutable map containing the given entries, in order.
   *
   * @throws IllegalArgumentException if duplicate keys are provided