Resolve Code Factor warning

Author: KoditkarVedant

Src/Notion.Client/NotionApiException.cs

@@ -21,6 +21,11 @@ private NotionApiException(
             NotionAPIErrorCode = notionAPIErrorCode;
             StatusCode = statusCode;
 
+            InitializeData();
+        }
+
+        private void InitializeData()
+        {
             Data.Add("StatusCode", StatusCode);
             Data.Add("NotionApiErrorCode", NotionAPIErrorCode);
         }
@@ -29,19 +34,4 @@ private NotionApiException(
 
         public HttpStatusCode StatusCode { get; }
     }
-
-    public sealed class NotionApiRateLimitException : NotionApiException
-    {
-        public TimeSpan? RetryAfter { get; }
-
-        public NotionApiRateLimitException(
-            HttpStatusCode statusCode,
-            NotionAPIErrorCode? notionAPIErrorCode,
-            string message,
-            TimeSpan? retryAfter)
-            : base(statusCode, notionAPIErrorCode, message)
-        {
-            RetryAfter = retryAfter;
-        }
-    }
 }

Src/Notion.Client/NotionApiRateLimitException.cs

@@ -0,0 +1,22 @@
+using System;
+using System.Net;
+
+namespace Notion.Client
+{
+    public sealed class NotionApiRateLimitException : NotionApiException
+    {
+        public TimeSpan? RetryAfter { get; }
+
+        public NotionApiRateLimitException(
+            HttpStatusCode statusCode,
+            NotionAPIErrorCode? notionAPIErrorCode,
+            string message,
+            TimeSpan? retryAfter)
+            : base(statusCode, notionAPIErrorCode, message)
+        {
+            RetryAfter = retryAfter;
+
+            Data.Add("RetryAfter", retryAfter);
+        }
+    }
+}