add and implement IHasEnvelope and IHasReceiver

EnvelopeGenerator.Domain/Entities/DocumentStatus.cs

@@ -1,5 +1,7 @@
 using System.ComponentModel.DataAnnotations;
 using System.ComponentModel.DataAnnotations.Schema;
+using EnvelopeGenerator.Domain.Interfaces;
+
 #if NETFRAMEWORK
 using System;
 #endif
@@ -12,7 +14,7 @@ namespace EnvelopeGenerator.Domain.Entities
 #endif
 
 [Table("TBSIG_DOCUMENT_STATUS", Schema = "dbo")]
-public class DocumentStatus
+public class DocumentStatus : IHasEnvelope, IHasReceiver
 {
     public DocumentStatus()
     {
@@ -43,10 +45,18 @@ public class DocumentStatus
     public string Value { get; set; }
 
     [ForeignKey("EnvelopeId")]
-    public virtual Envelope Envelope { get; set; }
+    public virtual Envelope
+#if NET
+        ?
+#endif
+        Envelope { get; set; }
 
     [ForeignKey("ReceiverId")]
-    public virtual Receiver Receiver { get; set; }
+    public virtual Receiver
+#if NET
+        ?
+#endif
+            Receiver { get; set; }
 }
 
 #if NETFRAMEWORK