calls.go
func (c *CallService) GetRecordings(ctx context.Context, callSid string, data url.Values) (*RecordingPage, error) {
	if data == nil {
		data = url.Values{}
	}
	// Cheat - hit the Recordings list view with a filter instead of
	// GET /calls/CA123/Recordings. The former is probably more reliable
	data.Set("CallSid", callSid)
	return c.client.Recordings.GetPage(ctx, data)
}
func (c *CallService) GetRecordings(ctx context.Context, callSid string, data url.Values) (*RecordingPage, error) {
	if data == nil {
		data = url.Values{}
	}
	// Cheat - hit the Recordings list view with a filter instead of
	// GET /calls/CA123/Recordings. The former is probably more reliable
	data.Set("CallSid", callSid)
	return c.client.Recordings.GetPage(ctx, data)
}
// GetRecordings returns an array of recordings for this Call. Note there may
// be more than one Page of results.