diff --git a/release_mixin.py b/release_mixin.py
index 06648e7..03f3c99 100644
--- a/release_mixin.py
+++ b/release_mixin.py
@@ -22,13 +22,13 @@ def add_versions(config, release_version, bump_version) -> dict:
 
 class ReleaseMixin(DevopsBuild):
 
-    def __init__(self, project, config):
+    def __init__(self, project, config): # todo: create services in init, dont expose repos etc in api
         super().__init__(project, config)
         release_mixin_config = config['ReleaseMixin']                
         self.config_file = release_mixin_config['config_file']
         self.main_branch = release_mixin_config['main_branch']
         self.git_api = GitApi()
-        self.release_type_repo = ReleaseTypeRepository(self.git_api)
+        self.release_type_repo = ReleaseTypeRepository(self.git_api) # maybe get from env?
         self.version_repo = VersionRepository(self.config_file)
         self.release_repo = ReleaseRepository(self.version_repo, self.release_type_repo, self.main_branch)
 
diff --git a/test/test_infrastructure_api.py b/test/test_infrastructure_api.py
index 6d681da..d914d32 100644
--- a/test/test_infrastructure_api.py
+++ b/test/test_infrastructure_api.py
@@ -17,5 +17,4 @@ sys.path.append(parent)
 # now we can import the module in the parent
 # directory.
 
-from infrastructure_api import GitApi
-
+from infrastructure_api import GitApi # todo: implement from services example
diff --git a/test/test_services.py b/test/test_services.py
index 3bcf1b0..4b3926c 100644
--- a/test/test_services.py
+++ b/test/test_services.py
@@ -25,7 +25,7 @@ from infrastructure_api import GitApi
 def change_test_dir( tmp_path: Path, monkeypatch: pt.MonkeyPatch):
     monkeypatch.chdir(tmp_path)
 
-def test_prepare_release_service(tmp_path: Path, monkeypatch: pt.MonkeyPatch):
+def test_prepare_release_service(tmp_path: Path, monkeypatch: pt.MonkeyPatch): # todo: maybe use mocks for service api tests
     # init
     file_name = 'config.json'
     with open(f'test/resources/{file_name}', 'r') as json_file: