SDK changes for Import Campaign API

src/Plivo/Resource/Campaign/Campaign.cs

@@ -169,6 +169,25 @@ public override string ToString()
         }
     }
 
+    [JsonObject(MemberSerialization.OptIn)]
+    public class ImportCampaign: Resource
+    {   
+        [JsonProperty("api_id")]
+        public new string ApiId {get; set;}
+
+        [JsonProperty("campaign_id")]
+        public new string CampaignId {get; set;}
+
+        [JsonProperty("message")]
+        public new string Messgae {get; set;}
+
+
+        public override string ToString()
+        {
+            return JsonConvert.SerializeObject(this, Formatting.Indented);
+        }
+    }
+
     [JsonObject(MemberSerialization.OptIn)]
     public class ListCampaigns: Resource
     { 

src/Plivo/Resource/Campaign/CampaignInterface.cs

@@ -252,6 +252,58 @@ public async Task<CreateCampaign> CreateAsync(string campaign_alias, string bran
 		}
 		#endregion
 
+        #region Import
+        ///<summary>
+        /// Import Campaign with specified campaign_id, campaign_alias.
+        ///</summary>
+        /// <returns>The import.</returns>
+        /// <param name="campaign_id">campaign_id</param>
+        /// <param name="campaign_alias">campaign_alias</param>
+        public ImportCampaign Import(string campaign_id,string campaign_alias,string url=null, string method=null)
+
+        {
+        var mandatoryParams = new List<string>{"campaign_id","campaign_alias"};
+        var data = CreateData(
+            mandatoryParams,
+            new
+            {
+                campaign_id,
+                campaign_alias,
+                url,
+                method
+            });
+        return ExecuteWithExceptionUnwrap(() =>
+		{
+				var result = Task.Run(async () => await Client.Update<ImportCampaign>(Uri + "10dlc/Campaign/Import/", data).ConfigureAwait(false)).Result;
+				result.Object.StatusCode = result.StatusCode;
+                return result.Object;
+		});
+        }
+
+
+        /// <summary>
+        /// Import Campaign.
+        ///<returns> The import.</returns>
+        /// <param name="campaign_id">campaign_id</param>
+        /// <param name="campaign_alias">campaign_alias</param>
+        public async Task<ImportCampaign> ImportAsync(string campaign_id,string campaign_alias,string url=null, string method=null)
+        {
+            var mandatoryParams = new List<string>{"campaign_id","campaign_alias"};
+        var data = CreateData(
+            mandatoryParams,
+            new
+            {
+                campaign_id,
+                campaign_alias,
+                url,
+                method
+            });
+
+            var result = await Client.Update<ImportCampaign>(Uri + "10dlc/Campaign/Import/", data);
+            result.Object.StatusCode = result.StatusCode;
+			return result.Object;
+        }
+        #endregion
         #region Update
         /// <summary>
         /// Update Campaign with the specified sample, keyword etc.

tests_netcore/Plivo.NetCore.Test/Mocks/campaignImportResponse.json

@@ -0,0 +1,5 @@
+{
+    "api_id": "2c6c5e16-090a-11ed-bb48-0242ac110004",
+    "campaign_id": "CNTQ0OD",
+    "message": "Request to import campaign was received and is being processed."
+}

tests_netcore/Plivo.NetCore.Test/Resources/TestCampaign.cs

@@ -91,6 +91,40 @@ public void TestCampaignCreate()
             AssertRequest(request);
         }
 
+        [Fact]
+        public void TestCampaignImport()
+        {
+            var data = new Dictionary<string, object>()
+            {
+                {"campaign_id", "CNTQ0OD"},
+                {"campaign_alias", "New Contact by vinay for ct"},
+                {"url", "/v1/Account/MAXXXXXXXXXXXXXXXXXX/10dlc/Campaign/Import/"}, 
+                {"method", "POST"}
+            };
+
+            var request = 
+                new PlivoRequest(
+                    "POST",
+                    "Account/MAXXXXXXXXXXXXXXXXXX/10dlc/Campaign/Import/",
+                    "",
+                    data);
+
+            var response =
+                System.IO.File.ReadAllText(
+                    SOURCE_DIR + @"../Mocks/campaignImportResponse.json"
+                );
+            Setup<ImportCampaign>(
+                200,
+                response
+            );
+            Assert.Empty(
+                ComparisonUtilities.Compare(
+                    response,
+                    Api.Campaign.Import(campaign_id:"CNTQ0OD", campaign_alias:"New Contact by vinay for ct", url:"/v1/Account/MAXXXXXXXXXXXXXXXXXX/10dlc/Campaign/Import/",  method:"POST")));
+
+            AssertRequest(request);
+        }
+
 
         [Fact]
         public void TestCampaignUpdate()