diff --git a/cache.go b/cache.go
index de300fa..7a176e8 100644
--- a/cache.go
+++ b/cache.go
@@ -12,52 +12,6 @@ import (
 	"time"
 )
 
-type unexportedInterface interface {
-	Set(string, interface{}, time.Duration)
-	Add(string, interface{}, time.Duration) error
-	Replace(string, interface{}, time.Duration) error
-	Get(string) (interface{}, bool)
-	Increment(string, int64) error
-	IncrementInt(string, int) (int, error)
-	IncrementInt8(string, int8) (int8, error)
-	IncrementInt16(string, int16) (int16, error)
-	IncrementInt32(string, int32) (int32, error)
-	IncrementInt64(string, int64) (int64, error)
-	IncrementUint(string, uint) (uint, error)
-	IncrementUintptr(string, uintptr) (uintptr, error)
-	IncrementUint8(string, uint8) (uint8, error)
-	IncrementUint16(string, uint16) (uint16, error)
-	IncrementUint32(string, uint32) (uint32, error)
-	IncrementUint64(string, uint64) (uint64, error)
-	IncrementFloat(string, float64) error
-	IncrementFloat32(string, float32) (float32, error)
-	IncrementFloat64(string, float64) (float64, error)
-	Decrement(string, int64) error
-	DecrementInt(string, int) (int, error)
-	DecrementInt8(string, int8) (int8, error)
-	DecrementInt16(string, int16) (int16, error)
-	DecrementInt32(string, int32) (int32, error)
-	DecrementInt64(string, int64) (int64, error)
-	DecrementUint(string, uint) (uint, error)
-	DecrementUintptr(string, uintptr) (uintptr, error)
-	DecrementUint8(string, uint8) (uint8, error)
-	DecrementUint16(string, uint16) (uint16, error)
-	DecrementUint32(string, uint32) (uint32, error)
-	DecrementUint64(string, uint64) (uint64, error)
-	DecrementFloat(string, float64) error
-	DecrementFloat32(string, float32) (float32, error)
-	DecrementFloat64(string, float64) (float64, error)
-	Delete(string)
-	DeleteExpired()
-	Items() map[string]*Item
-	ItemCount() int
-	Flush()
-	Save(io.Writer) error
-	SaveFile(string) error
-	Load(io.Reader) error
-	LoadFile(io.Reader) error
-}
-
 type Item struct {
 	Object     interface{}
 	Expiration *time.Time