```kotlin
val client = OkHttpClient.Builder()
    .dns { hostname -> InetAddress.getAllByName(hostname).toList() }
    .build()
```

Kotlin calling OkHttp 4.x:

```kotlin
val client = OkHttpClient.Builder()
    .dns(object : Dns {
      override fun lookup(hostname: String) =
          InetAddress.getAllByName(hostname).toList()
    })
    .build()
```

SAM conversion impacts these APIs:

  @Test
  fun tagsAreImmutable() {
    val builder =
      Request
        .Builder()
        .url("https://square.com")
    val requestA = builder.tag(String::class, "a").build()
    val requestB = builder.tag(String::class, "b").build()
    val requestC = requestA.newBuilder().tag(String::class, "c").build()
    assertThat(requestA.tag(String::class)).isSameInstanceAs("a")

      MockResponse
        .Builder()
        .code(HttpURLConnection.HTTP_MOVED_TEMP)
        .setHeader("Location", otherServer.url("/"))
        .build(),
    )
    otherServer.enqueue(
      MockResponse
        .Builder()
        .headersDelay(500, TimeUnit.MILLISECONDS)
        .build(),
    )
    val request = Request.Builder().url(server.url("/")).build()
    val call = client.newCall(request)

    ImmutableSetMultimap.Builder<K, V> builder = ImmutableSetMultimap.builder();
    builder.put(k1, v1);
    builder.put(k2, v2);
    builder.put(k3, v3);
    builder.put(k4, v4);
    builder.put(k5, v5);
    return builder.build();
  }

  // looking for of() with > 5 entries? Use the builder instead.

  /** Returns a new {@link Builder}. */
  public static <K, V> Builder<K, V> builder() {

}

type AndConditions struct {
	Exprs []Expression
}

func (and AndConditions) Build(builder Builder) {
	if len(and.Exprs) > 1 {
		builder.WriteByte('(')
		buildExprs(and.Exprs, builder, AndWithSpace)
		builder.WriteByte(')')
	} else {
		buildExprs(and.Exprs, builder, AndWithSpace)
	}
}

func Or(exprs ...Expression) Expression {
	if len(exprs) == 0 {
		return nil
	}

					builder.WriteByte(',')
				}
				builder.WriteQuoted(column)
			}
			builder.WriteString(`) `)
		}

		if len(onConflict.TargetWhere.Exprs) > 0 {
			builder.WriteString(" WHERE ")
			onConflict.TargetWhere.Build(builder)
			builder.WriteByte(' ')
		}
	}

	if onConflict.DoNothing {
		builder.WriteString("DO NOTHING")
	} else {
		builder.WriteString("DO UPDATE SET ")
		onConflict.DoUpdates.Build(builder)
	}

    unused = builder.build(); // this is *also* allowed
  }

  public void testBuildMutate() {
    ThreadFactory factory1 = builder.setPriority(1).build();
    assertEquals(1, factory1.newThread(monitoredRunnable).getPriority());

    builder.setPriority(2); // change the state of the builder
    assertEquals(1, factory1.newThread(monitoredRunnable).getPriority());
  }

  @Test
  fun cookieBuilder() {
    var builder: Cookie.Builder = Cookie.Builder()
    builder = builder.name("")
    builder = builder.value("")
    builder = builder.expiresAt(0L)
    builder = builder.domain("")
    builder = builder.hostOnlyDomain("")
    builder = builder.path("")
    builder = builder.secure()
    builder = builder.httpOnly()
    builder = builder.sameSite("None")

    val builder =
      MockResponse
        .Builder()
        .throttleBody(6, 1, TimeUnit.SECONDS)
    transferKind.setBody(builder, "ABCDE\nFGHIJKLMNOPQRSTUVWXYZ", 1024)
    server.enqueue(builder.build())
    server.enqueue(
      MockResponse
        .Builder()
        .body("Request #2")
        .build(),
    )
    val response1 = get(server.url("/"))

              continue;
            }
            builder.add(Range.range(i, lowerType, j, upperType));
          }
        }
      }
    }
    RANGES = builder.build();
  }

  public void testBuilderRejectsEmptyRanges() {
    for (int i = MIN_BOUND; i <= MAX_BOUND; i++) {
      int ii = i;
      ImmutableRangeMap.Builder<Integer, Integer> builder = ImmutableRangeMap.builder();