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

one use

	github.com/gotd/td/tg (current package)
		tl_update_slices_gen.go#L7150: func (s UpdatePhoneCallSignalingDataArray) Retain(keep func(x UpdatePhoneCallSignalingData) bool) UpdatePhoneCallSignalingDataArray {