Update actor.go

fix actor Activate Deactivate interface

actor/actor.go

@@ -139,6 +139,16 @@ func (b *ServerImplBase) SaveState() error {
 	return b.ctx.SaveState(context.Background())
 }
 
+// Activate when actor created by actor manager
+func (b *ServerImplBase) Activate() error {
+	return nil
+}
+
+// Deactivate before actor removed by actor manager
+func (b *ServerImplBase) Deactivate() error {
+	return nil
+}
+
 // Deprecated: Use ServerImplBaseCtx instead.
 func (b *ServerImplBase) WithContext() *ServerImplBaseCtx {
 	b.ctx.lock.RLock()
@@ -187,6 +197,16 @@ func (b *ServerImplBaseCtx) SaveState(ctx context.Context) error {
 	return nil
 }
 
+// Activate when actor created by actor manager
+func (b *ServerImplBaseCtx) Activate() error {
+	return nil
+}
+
+// Deactivate before actor removed by actor manager
+func (b *ServerImplBaseCtx) Deactivate() error {
+	return nil
+}
+
 // Deprecated: StateManager is deprecated in favour of StateManagerContext.
 type StateManager interface {
 	// Add is to add new state store with @stateName and @value