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

one use

	github.com/gotd/td/tg (current package)
		tl_input_encrypted_file_slices_gen.go#L57: func (s InputEncryptedFileClassArray) Retain(keep func(x InputEncryptedFileClass) bool) InputEncryptedFileClassArray {