diff --git a/fuseutil/not_implemented_file_system.go b/fuseutil/not_implemented_file_system.go
index 0eb71b2..57fd78b 100644
--- a/fuseutil/not_implemented_file_system.go
+++ b/fuseutil/not_implemented_file_system.go
@@ -14,11 +14,106 @@
 
 package fuseutil
 
-// A FileSystem that returns ENOSYS for all methods. Embed this in your struct
-// to inherit default implementations for the methods you don't care about,
-// ensuring your struct will continue to implement FileSystem even as new
-// methods are added.
+import (
+	"github.com/jacobsa/fuse"
+	"github.com/jacobsa/fuse/fuseops"
+)
+
+// A FileSystem that returns fuse.ENOSYS for all methods. Embed this in your
+// struct to inherit default implementations for the methods you don't care
+// about, ensuring your struct will continue to implement FileSystem even as
+// new methods are added.
 type NotImplementedFileSystem struct {
 }
 
 var _ FileSystem = &NotImplementedFileSystem{}
+
+func (fs *NotImplementedFileSystem) Init(
+	op *fuseops.InitOp) error {
+	return fuse.ENOSYS
+}
+
+func (fs *NotImplementedFileSystem) LookUpInode(
+	op *fuseops.LookUpInodeOp) error {
+	return fuse.ENOSYS
+}
+
+func (fs *NotImplementedFileSystem) GetInodeAttributes(
+	op *fuseops.GetInodeAttributesOp) error {
+	return fuse.ENOSYS
+}
+
+func (fs *NotImplementedFileSystem) SetInodeAttributes(
+	op *fuseops.SetInodeAttributesOp) error {
+	return fuse.ENOSYS
+}
+
+func (fs *NotImplementedFileSystem) ForgetInode(
+	op *fuseops.ForgetInodeOp) error {
+	return fuse.ENOSYS
+}
+
+func (fs *NotImplementedFileSystem) MkDir(
+	op *fuseops.MkDirOp) error {
+	return fuse.ENOSYS
+}
+
+func (fs *NotImplementedFileSystem) CreateFile(
+	op *fuseops.CreateFileOp) error {
+	return fuse.ENOSYS
+}
+
+func (fs *NotImplementedFileSystem) RmDir(
+	op *fuseops.RmDirOp) error {
+	return fuse.ENOSYS
+}
+
+func (fs *NotImplementedFileSystem) Unlink(
+	op *fuseops.UnlinkOp) error {
+	return fuse.ENOSYS
+}
+
+func (fs *NotImplementedFileSystem) OpenDir(
+	op *fuseops.OpenDirOp) error {
+	return fuse.ENOSYS
+}
+
+func (fs *NotImplementedFileSystem) ReadDir(
+	op *fuseops.ReadDirOp) error {
+	return fuse.ENOSYS
+}
+
+func (fs *NotImplementedFileSystem) ReleaseDirHandle(
+	op *fuseops.ReleaseDirHandleOp) error {
+	return fuse.ENOSYS
+}
+
+func (fs *NotImplementedFileSystem) OpenFile(
+	op *fuseops.OpenFileOp) error {
+	return fuse.ENOSYS
+}
+
+func (fs *NotImplementedFileSystem) ReadFile(
+	op *fuseops.ReadFileOp) error {
+	return fuse.ENOSYS
+}
+
+func (fs *NotImplementedFileSystem) WriteFile(
+	op *fuseops.WriteFileOp) error {
+	return fuse.ENOSYS
+}
+
+func (fs *NotImplementedFileSystem) SyncFile(
+	op *fuseops.SyncFileOp) error {
+	return fuse.ENOSYS
+}
+
+func (fs *NotImplementedFileSystem) FlushFile(
+	op *fuseops.FlushFileOp) error {
+	return fuse.ENOSYS
+}
+
+func (fs *NotImplementedFileSystem) ReleaseFileHandle(
+	op *fuseops.ReleaseFileHandleOp) error {
+	return fuse.ENOSYS
+}