Updates to /graph/betasdk/beta_service.go

Addition of constructor and serialize function.

src/internal/connector/graph/betasdk/beta_service.go

@@ -1,7 +1,9 @@
 package betasdk
 
 import (
+	absser "github.com/microsoft/kiota-abstractions-go/serialization"
 	msgraphsdk "github.com/microsoftgraph/msgraph-sdk-go"
+	"github.com/pkg/errors"
 )
 
 // Service wraps BetaClient's functionality.
@@ -18,3 +20,25 @@ func (s Service) Adapter() *msgraphsdk.GraphRequestAdapter {
 func (s Service) Client() *BetaClient {
 	return s.client
 }
+
+func NewService(adpt *msgraphsdk.GraphRequestAdapter) *Service {
+	return &Service{
+		client: NewBetaClient(adpt),
+	}
+}
+
+// Seraialize writes an M365 parsable object into a byte array using the built-in
+// application/json writer within the adapter.
+func (s Service) Serialize(object absser.Parsable) ([]byte, error) {
+	writer, err := s.Adapter().GetSerializationWriterFactory().GetSerializationWriter("application/json")
+	if err != nil || writer == nil {
+		return nil, errors.Wrap(err, "creating json serialization writer")
+	}
+
+	err = writer.WriteObjectValue("", object)
+	if err != nil {
+		return nil, errors.Wrap(err, "writeObjecValue serialization")
+	}
+
+	return writer.GetSerializedContent()
+}