diff --git a/examples/apple/objc_interop/OIPrintStream.h b/examples/apple/objc_interop/OIPrintStream.h
index 2873ba84f..481e44ab7 100644
--- a/examples/apple/objc_interop/OIPrintStream.h
+++ b/examples/apple/objc_interop/OIPrintStream.h
@@ -15,10 +15,12 @@
 #import <Foundation/Foundation.h>
 
 /** A very contrived interface for writing strings to a file handle. */
-@interface OIPrintStream : NSObject
+@interface OIPrintStream<PrintType> : NSObject
 
 - (nonnull instancetype)initWithFileHandle:(nonnull NSFileHandle *)fileHandle;
 
+- (void)print:(nonnull PrintType)message;
+
 - (void)printString:(nonnull NSString *)message;
 
 @end
diff --git a/examples/apple/objc_interop/OIPrintStream.m b/examples/apple/objc_interop/OIPrintStream.m
index 1e1428509..82f9d4013 100644
--- a/examples/apple/objc_interop/OIPrintStream.m
+++ b/examples/apple/objc_interop/OIPrintStream.m
@@ -25,6 +25,9 @@ - (instancetype)initWithFileHandle:(nonnull NSFileHandle *)fileHandle {
   return self;
 }
 
+- (void)print:(nonnull id)message {
+}
+
 - (void)printString:(nonnull NSString *)message {
   NSData *data = [message dataUsingEncoding:NSUTF8StringEncoding];
   [_fileHandle writeData:data];
diff --git a/examples/apple/objc_interop/Printer.swift b/examples/apple/objc_interop/Printer.swift
index 3d65eb508..526d70ed3 100644
--- a/examples/apple/objc_interop/Printer.swift
+++ b/examples/apple/objc_interop/Printer.swift
@@ -15,10 +15,13 @@
 import Foundation
 import examples_apple_objc_interop_PrintStream
 
+@objc public protocol MyStupid {
+}
+
 @objc(OIPrinter)
 public class Printer: NSObject {
 
-  private let stream: OIPrintStream
+  private let stream: OIPrintStream<MyStupid>
   private let prefix: String
 
   @objc public init(prefix: NSString) {
@@ -26,6 +29,10 @@ public class Printer: NSObject {
     self.prefix = prefix as String
   }
 
+  @objc public func stream(_ thing: MyStupid) -> OIPrintStream<MyStupid> {
+    return stream
+  }
+
   @objc public func print(_ message: NSString) {
     stream.print("\(prefix)\(message)")
   }
diff --git a/examples/apple/objc_interop_modulemap/OIPrintStream.h b/examples/apple/objc_interop_modulemap/OIPrintStream.h
index 2873ba84f..481e44ab7 100644
--- a/examples/apple/objc_interop_modulemap/OIPrintStream.h
+++ b/examples/apple/objc_interop_modulemap/OIPrintStream.h
@@ -15,10 +15,12 @@
 #import <Foundation/Foundation.h>
 
 /** A very contrived interface for writing strings to a file handle. */
-@interface OIPrintStream : NSObject
+@interface OIPrintStream<PrintType> : NSObject
 
 - (nonnull instancetype)initWithFileHandle:(nonnull NSFileHandle *)fileHandle;
 
+- (void)print:(nonnull PrintType)message;
+
 - (void)printString:(nonnull NSString *)message;
 
 @end
diff --git a/examples/apple/objc_interop_modulemap/OIPrintStream.m b/examples/apple/objc_interop_modulemap/OIPrintStream.m
index 76f8b9278..ccd8ec7b5 100644
--- a/examples/apple/objc_interop_modulemap/OIPrintStream.m
+++ b/examples/apple/objc_interop_modulemap/OIPrintStream.m
@@ -25,6 +25,9 @@ - (instancetype)initWithFileHandle:(nonnull NSFileHandle *)fileHandle {
   return self;
 }
 
+- (void)print:(nonnull id)message {
+}
+
 - (void)printString:(nonnull NSString *)message {
   NSData *data = [message dataUsingEncoding:NSUTF8StringEncoding];
   [_fileHandle writeData:data];
diff --git a/examples/apple/objc_interop_modulemap/Printer.swift b/examples/apple/objc_interop_modulemap/Printer.swift
index bba520a3b..c1534ac8f 100644
--- a/examples/apple/objc_interop_modulemap/Printer.swift
+++ b/examples/apple/objc_interop_modulemap/Printer.swift
@@ -15,10 +15,13 @@
 import Foundation
 import examples_apple_objc_interop_modulemap_PrintStream
 
+@objc public protocol MyStupid {
+}
+
 @objc(OIPrinter)
 public class Printer: NSObject {
 
-  private let stream: OIPrintStream
+  private let stream: OIPrintStream<MyStupid>
   private let prefix: String
 
   @objc public init(prefix: NSString) {
@@ -26,6 +29,10 @@ public class Printer: NSObject {
     self.prefix = prefix as String
   }
 
+  @objc public func stream(_ thing: MyStupid) -> OIPrintStream<MyStupid> {
+    return stream
+  }
+
   @objc public func print(_ message: NSString) {
     stream.print("\(prefix)\(message)")
   }