1 files changed, 15 insertions, 0 deletions
diff --git a/libgo/go/reflect/example_test.go b/libgo/go/reflect/example_test.go
index cca28eeece8..8ebf9765b8d 100644
--- a/libgo/go/reflect/example_test.go
+++ b/libgo/go/reflect/example_test.go
@@ -6,6 +6,8 @@ package reflect_test
 
 import (
 	"fmt"
+	"io"
+	"os"
 	"reflect"
 )
 
@@ -64,3 +66,16 @@ func ExampleStructTag() {
 	// Output:
 	// blue gopher
 }
+
+func ExampleTypeOf() {
+	// As interface types are only used for static typing, a
+	// common idiom to find the reflection Type for an interface
+	// type Foo is to use a *Foo value.
+	writerType := reflect.TypeOf((*io.Writer)(nil)).Elem()
+
+	fileType := reflect.TypeOf((*os.File)(nil))
+	fmt.Println(fileType.Implements(writerType))
+
+	// Output:
+	// true
+}