android/guava/src/com/google/common/base/Converter.java
public final <C> Converter<A, C> andThen(Converter<B, C> secondConverter) {
    return doAndThen(secondConverter);
  }
public final <C> Converter<A, C> andThen(Converter<B, C> secondConverter) {
    return doAndThen(secondConverter);
  }
Returns a converter whose {@code convert} method applies {@code secondConverter} to the result
of this converter. Its {@code reverse} method applies the converters in reverse order.

<p>The returned converter is serializable if {@code this} converter and {@code secondConverter}
are.