SUPER_TYPE,

    /**
     * Similar to [SUPER_TYPE], except for that Kotlin collections remain as-is.
     */
    SUPER_TYPE_KOTLIN_COLLECTIONS_AS_IS,

    /**
     * When method return type should be boxed (e.g., kotlin.Int to Ljava/lang/Integer;)
     */
    RETURN_TYPE_BOXED,

    /**
     * Optimal mode to convert the return type of declarations if it's part of signature.
     */
    RETURN_TYPE,

    /**

    boolean aBoolean = true;
    Long boxedLong = null;
    int anInt = 1;
    // With a boxed predicate, no overloads can be selected in phase 1
    // ambiguous without the call to .booleanValue to unbox the Boolean
    Preconditions.checkState(boxedBoolean.booleanValue(), "", 1);
    // ambiguous without the cast to Object because the boxed predicate prevents any overload from
    // being selected in phase 1

                // If no attribute precedence has been set anywhere, we can just iterate in order
                return new PrecedenceResult(IntStream.range(0, requested.size()).boxed().collect(Collectors.toList()));
            } else {
                // Populate requested attribute -> position in requested attribute list
                final Map<String, Integer> remaining = new LinkedHashMap<>();

   */
  public static OptionalInt findLast(IntStream stream) {
    // findLast(Stream) does some allocation, so we might as well box some more
    java.util.Optional<Integer> boxedLast = findLast(stream.boxed());
    return boxedLast.map(OptionalInt::of).orElse(OptionalInt.empty());
  }

  /**
   * Returns the last element of the specified stream, or {@link OptionalLong#empty} if the stream
   * is empty.
   *

    }
  }

  /**
   * Implementation of {@link Stream#flatMap} with a primitive spliterator output type.
   *
   * @param <InElementT> the element type of the input spliterator
   * @param <OutElementT> the (boxed) element type of the output spliterators
   * @param <OutConsumerT> the specialized consumer type for the primitive output type
   * @param <OutSpliteratorT> the primitive spliterator type associated with {@code OutElementT}
   */

// Errno values.
const (
	errnoERROR_IO_PENDING = 997
)

var (
	errERROR_IO_PENDING error = syscall.Errno(errnoERROR_IO_PENDING)
	errERROR_EINVAL     error = syscall.EINVAL
)

// errnoErr returns common boxed Errno values, to prevent
// allocations at runtime.
func errnoErr(e syscall.Errno) error {
	switch e {
	case 0:
		return errERROR_EINVAL
	case errnoERROR_IO_PENDING:
		return errERROR_IO_PENDING
	}

}

// Do the interface allocations only once for common
// Errno values.
var (
	errEAGAIN error = EAGAIN
	errEINVAL error = EINVAL
	errENOENT error = ENOENT
)

// errnoErr returns common boxed Errno values, to prevent
// allocations at runtime.
func errnoErr(e Errno) error {
	switch e {
	case 0:
		return nil
	case EAGAIN:
		return errEAGAIN
	case EINVAL:
		return errEINVAL
	case ENOENT:

This is similar to `null` not being assignable to primitive types in Java.

To fix this problem, you have two options:

- remove the `@Optional` annotation
- or use the boxed type (e.g Integer instead of int) if you intend to make the property nullable


[[implementation_unknown]]
== Cannot use an input with an unknown implementation

        "isexe": "^2.0.0"
      },
      "bin": {
        "which": "bin/which"
      }
    },
    "node_modules/which-boxed-primitive": {
      "version": "1.0.2",
      "resolved": "https://registry.npmjs.org/which-boxed-primitive/-/which-boxed-primitive-1.0.2.tgz",
      "integrity": "sha512-bwZdv0AKLpplFY2KZRX6TvyuN7ojjr7lwkg6ml0roIy9YeuSr7JS372qlNW18UQYzgYK9ziGcerWqZOmEn9VNg==",
      "dev": true,

        .snapshot();
  }

  /**
   * Returns a {@link Collector} which accumulates statistics from a {@link java.util.stream.Stream}
   * of any type of boxed {@link Number} into a {@link Stats}. Use by calling {@code
   * boxedNumericStream.collect(toStats())}. The numbers will be converted to {@code double} values
   * (which may cause loss of precision).
   *