updated API signatures as per latest C#

PubNubUnity/Assets/PubNub/Runtime/Adapters/PubNub.cs

@@ -1,13 +1,14 @@
 using System;
 using System.Threading.Tasks;
 using PubnubApi.EndPoint;
+using PubnubApi.Interface;
 
 namespace PubnubApi.Unity {
 	public static class PubnubExtensions {
-		public static SubscribeOperation<T> Subscribe<T>(this Pubnub pn) => pn.Subscribe<T>();
+		public static ISubscribeOperation<T> Subscribe<T>(this Pubnub pn) => pn.Subscribe<T>();
 
 		[Obsolete("Use the generic version instead")]
-		public static SubscribeOperation<string> Subscribe(this Pubnub pn) => pn.Subscribe<string>();
+		public static ISubscribeOperation<string> Subscribe(this Pubnub pn) => pn.Subscribe<string>();
 
 		[Obsolete("Use the generic version instead")]
 		public static bool Reconnect(this Pubnub pn) => pn.Reconnect<string>();
@@ -45,10 +46,9 @@ public static UnsubscribeAllOperation<string> UnsubscribeAll(this Pubnub pn) {
 
 
 		// TODO create an async variant
-		public static UnsubscribeOperation<string> Unsubscribe(this Pubnub pn) {
+		public static IUnsubscribeOperation<string> Unsubscribe(this Pubnub pn) {
 			return pn.Unsubscribe<string>();
 		}
 
-
 	}
 }

PubNubUnity/Assets/PubNub/Runtime/Adapters/SubscribeOperation.cs

@@ -3,31 +3,31 @@
 using System.Linq;
 using PubnubApi;
 using PubnubApi.EndPoint;
+using PubnubApi.Interface;
 
 namespace PubnubApi.Unity {
 	public static class SubscribeOperationExtensions {
-		public static SubscribeOperation<T> Channels<T>(this SubscribeOperation<T> so, List<string> channels) =>
+		public static ISubscribeOperation<T> Channels<T>(this SubscribeOperation<T> so, List<string> channels) =>
 			so.Channels(channels.ToArray());
 
-		public static SubscribeOperation<string> Channels(this SubscribeOperation<string> so, List<string> channels) =>
+		public static ISubscribeOperation<string> Channels(this SubscribeOperation<string> so, List<string> channels) =>
 			so.Channels<string>(channels);
 
-		public static SubscribeOperation<T> ChannelGroups<T>(this SubscribeOperation<T> so, List<string> channels) =>
+		public static ISubscribeOperation<T> ChannelGroups<T>(this SubscribeOperation<T> so, List<string> channels) =>
 			so.ChannelGroups(channels.ToArray());
 
-		public static SubscribeOperation<string> ChannelGroups(this SubscribeOperation<string> so, List<string> channels) =>
+		public static ISubscribeOperation<string> ChannelGroups(this SubscribeOperation<string> so, List<string> channels) =>
 			so.ChannelGroups<string>(channels);
 
 
-		public static SubscribeOperation<string> QueryParam(this SubscribeOperation<string> so,
+		public static ISubscribeOperation<string> QueryParam(this SubscribeOperation<string> so,
 			Dictionary<string, string> customQueryParam) => so.QueryParam(customQueryParam.ToDictionary(kvp => kvp.Key, kvp => kvp.Value as object));
 
-		public static UnsubscribeOperation<T> ChannelGroups<T>(this UnsubscribeOperation<T> op, List<string> channelGroups) {
-			return op.ChannelGroups(channelGroups.ToArray());
-		}
+		public static IUnsubscribeOperation<T> ChannelGroups<T>(this UnsubscribeOperation<T> op, List<string> channelGroups) =>
+			op.ChannelGroups(channelGroups.ToArray());
+
 
-		public static UnsubscribeOperation<T> Channels<T>(this UnsubscribeOperation<T> op, List<string> channels) {
-			return op.ChannelGroups(channels.ToArray());
-		}
+		public static IUnsubscribeOperation<T> Channels<T>(this UnsubscribeOperation<T> op, List<string> channels) =>
+			op.Channels(channels.ToArray());
 	}
 }