SAM Conversions
---------------

When you use Java APIs from Kotlin you can operate on Java interfaces as if they were Kotlin
lambdas. The [feature][java_sams] is available for interfaces that define a Single Abstract Method
(SAM).

But when you use Kotlin APIs from Kotlin there’s no automatic conversion. Code that used SAM lambdas
with OkHttp 3.x: must use `object :` with OkHttp 4.x:

  }

  public void testIndexOf_withDuplicates() {
    List<String> list = Lists.newArrayList("mary", "bob", "bob", "bob", "sam");
    assertEquals(0, Iterables.indexOf(list, equalTo("mary")));
    assertEquals(1, Iterables.indexOf(list, equalTo("bob")));
    assertEquals(4, Iterables.indexOf(list, equalTo("sam")));
    assertEquals(-1, Iterables.indexOf(list, equalTo("jack")));
  }

  }

  public void testIndexOf_withDuplicates() {
    List<String> list = Lists.newArrayList("mary", "bob", "bob", "bob", "sam");
    assertEquals(0, Iterables.indexOf(list, equalTo("mary")));
    assertEquals(1, Iterables.indexOf(list, equalTo("bob")));
    assertEquals(4, Iterables.indexOf(list, equalTo("sam")));
    assertEquals(-1, Iterables.indexOf(list, equalTo("jack")));
  }