feat: update futures service arguments

Author: wayne163

v2/client.go

@@ -183,8 +183,10 @@ const (
 	MarginTransferTypeToMargin MarginTransferType = 1
 	MarginTransferTypeToMain   MarginTransferType = 2
 
-	FuturesTransferTypeToFutures FuturesTransferType = 1
-	FuturesTransferTypeToMain    FuturesTransferType = 2
+	FuturesTransferTypeToFutures       FuturesTransferType = 1
+	FuturesTransferTypeToMain          FuturesTransferType = 2
+	FuturesTransferTypeToFuturesCM     FuturesTransferType = 3
+	FuturesTransferTypeFuturesCMToMain FuturesTransferType = 4
 
 	MarginLoanStatusTypePending   MarginLoanStatusType = "PENDING"
 	MarginLoanStatusTypeConfirmed MarginLoanStatusType = "CONFIRMED"

v2/futures_service.go

@@ -59,7 +59,7 @@ func (s *FuturesTransferService) Do(ctx context.Context, opts ...RequestOption)
 // ListFuturesTransferService list futures transfer
 type ListFuturesTransferService struct {
 	c         *Client
-	asset     string
+	asset     *string
 	startTime int64
 	endTime   *int64
 	current   *int64
@@ -68,7 +68,7 @@ type ListFuturesTransferService struct {
 
 // Asset set asset
 func (s *ListFuturesTransferService) Asset(asset string) *ListFuturesTransferService {
-	s.asset = asset
+	s.asset = &asset
 	return s
 }
 
@@ -104,9 +104,11 @@ func (s *ListFuturesTransferService) Do(ctx context.Context, opts ...RequestOpti
 		secType:  secTypeSigned,
 	}
 	r.setParams(params{
-		"asset":     s.asset,
 		"startTime": s.startTime,
 	})
+	if s.asset != nil {
+		r.setParam("asset", *s.asset)
+	}
 	if s.endTime != nil {
 		r.setParam("endTime", *s.endTime)
 	}