Add GetRawAsync for files.

src/GitLabApiClient/FilesClient.cs

@@ -1,3 +1,4 @@
+using System;
 using System.Threading.Tasks;
 using GitLabApiClient.Internal.Http;
 using GitLabApiClient.Internal.Paths;
@@ -16,5 +17,10 @@ public async Task<File> GetAsync(ProjectId projectId, string filePath, string re
         {
             return await _httpFacade.Get<File>($"projects/{projectId}/repository/files/{filePath.UrlEncode()}?ref={reference}");
         }
+
+        public async Task<string> GetRawAsync(ProjectId projectId, string filePath, string reference = "master")
+        {
+            return await _httpFacade.GetString($"projects/{projectId}/repository/files/{filePath.UrlEncode()}/raw?ref={reference}");
+        }
     }
 }

src/GitLabApiClient/IFilesClient.cs

@@ -7,5 +7,6 @@ namespace GitLabApiClient
     public interface IFilesClient
     {
         Task<File> GetAsync(ProjectId projectId, string filePath, string reference = "master");
+        Task<string> GetRawAsync(ProjectId projectId, string filePath, string reference = "master");
     }
 }

src/GitLabApiClient/Internal/Http/GitLabHttpFacade.cs

@@ -68,6 +68,9 @@ public Task<IList<T>> GetPagedList<T>(string uri) =>
         public Task<T> Get<T>(string uri) =>
             _requestor.Get<T>(uri);
 
+        public Task<string> GetString(string uri) =>
+            _requestor.GetString(uri);
+
         public Task GetFile(string uri, string outputPath) =>
             _requestor.GetFile(uri, outputPath);
 

src/GitLabApiClient/Internal/Http/GitlabApiRequestor.cs

@@ -28,6 +28,13 @@ public async Task<T> Get<T>(string url)
             return await ReadResponse<T>(responseMessage);
         }
 
+        public async Task<string> GetString(string url)
+        {
+            var responseMessage = await _client.GetAsync(url);
+            await EnsureSuccessStatusCode(responseMessage);
+            return await responseMessage.Content.ReadAsStringAsync();
+        }
+
         public async Task GetFile(string url, string outputPath)
         {
             var response = await _client.GetAsync(url, HttpCompletionOption.ResponseHeadersRead);