github.com/gotd/td/tg.EncryptedMessageServiceArray.Retain (method)

one use

	github.com/gotd/td/tg (current package)
		tl_encrypted_message_slices_gen.go#L275: func (s EncryptedMessageServiceArray) Retain(keep func(x EncryptedMessageService) bool) EncryptedMessageServiceArray {