Added: IsBusy

FabAccessAPI/Machines.cs

@@ -113,6 +113,22 @@ namespace FabAccessAPI
             return writeCap.Use();
         }
 
+        /// <summary>
+        /// Try to get a GiveBack capability for a machine.
+        /// </summary>
+        /// <returns>Capability to give back the machine or null</returns>
+        /// <exception cref="UnauthorizedException"></exception>
+        public Task<Schema.Machine.WriteInterface.IGiveBack> GetGiveBack()
+        {
+            var writeCap = _machine.Write;
+            if (writeCap == null)
+            {
+                throw new UnauthorizedException();
+            }
+
+            return writeCap.GetGiveBack();
+        }
+
         /// <summary>
         /// Try to reserve a machine. Throws a UnauthorizedException if the user does not have the required
         /// permissions to use this machine.