android/guava/src/com/google/common/collect/ImmutableMap.java
public static <K, V> ImmutableMap<K, V> of(K k1, V v1, K k2, V v2, K k3, V v3) {
    checkEntryNotNull(k1, v1);
    checkEntryNotNull(k2, v2);
    checkEntryNotNull(k3, v3);
    return RegularImmutableMap.create(3, new Object[] {k1, v1, k2, v2, k3, v3});
  }
public static <K, V> ImmutableMap<K, V> of(K k1, V v1, K k2, V v2, K k3, V v3) {
    checkEntryNotNull(k1, v1);
    checkEntryNotNull(k2, v2);
    checkEntryNotNull(k3, v3);
    return RegularImmutableMap.create(3, new Object[] {k1, v1, k2, v2, k3, v3});
  }
public static < K , V > ImmutableMap < K , V > of ( K k1 , V v1 , K k2 , V v2 , K k3 , V v3 ) { checkEntryNotNull ( k1 , v1 ) ; checkEntryNotNull ( k2 , v2 ) ; checkEntryNotNull ( k3 , v3 ) ; return RegularImmutableMap . create ( 3 , new Object [ ] { k1 , v1 , k2 , v2 , k3 , v3 } ) ; }
Returns an immutable map containing the given entries, in order.

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