docs: add get file section for version 1

src/docs/version_001/resources/files/get_file/example.md

@@ -1,4 +1,31 @@
 # Retrieve a file from a record in an app
 
-{% code method="GET" heading="/Files/{appId}/{recordId}/{fieldId}" defaultLanguage="bash" }
+{% code method="GET" heading="/Files/{appId}/{recordId}/{fieldId}" defaultLanguage="bash" %}
+
+```bash
+curl --location 'https://api.onspring.com/v1/Files/195/1/6989?fileId=89' \
+--header 'X-ApiKey: 000000ffffff000000ffffff/00000000-ffff-0000-ffff-000000000000'
+```
+
+```csharp
+using Onspring.API.SDK.Helpers;
+
+var httpHelper = new HttpHelper(
+  config.baseUrl,
+  config.apiKey
+);
+
+using (var result = httpHelper.GetFileFromRecord(195, 1, 6989, 89))
+{
+  Console.WriteLine($"FileName is: {result.FileName}");
+  Console.WriteLine($"ContentType: {result.ContentType}");
+  Console.WriteLine($"ContentLength: {result.ContentLength}");
+
+  using (var fileStream = new FileStream($"C:\Users\Public\Documents\{result.FileName}", FileMode.Create))
+  {
+    result.Stream.CopyTo(fileStream);
+  }
+}
+```
+
 {% /code %}