Method rewrapMapKey

java/dagger/internal/codegen/KeyFactory.java:370–390

If key's type is Map >, returns a key with type Map > with the same qualifier. Otherwise returns Optional#empty(). Returns Optional#empty() if newWrappingClass is not in the classpath. @throws Il

(
      Key possibleMapKey, Class<?> currentWrappingClass, Class<?> newWrappingClass)

   *     currentWrappingClass}
   */
  Optional<Key> rewrapMapKey(
      Key possibleMapKey, Class<?> currentWrappingClass, Class<?> newWrappingClass) {
    checkArgument(!currentWrappingClass.equals(newWrappingClass));
    if (MapType.isMap(possibleMapKey)) {
      MapType mapType = MapType.from(possibleMapKey);
      if (!mapType.isRawType() && mapType.valuesAreTypeOf(currentWrappingClass)) {
        TypeElement wrappingElement = getClassElement(newWrappingClass);
        if (wrappingElement == null) {
          // This target might not be compiled with Producers, so wrappingClass might not have an
          // associated element.
          return Optional.empty();
        }
        DeclaredType wrappedValueType =
            types.getDeclaredType(
                wrappingElement, mapType.unwrappedValueType(currentWrappingClass));
        return Optional.of(
            possibleMapKey.toBuilder().type(mapOf(mapType.keyType(), wrappedValueType)).build());
      }
    }
    return Optional.empty();
  }

  /**
   * If {@code key}'s type is {@code Map<K, Foo>} and {@code Foo} is not {@code WrappingClass