diff --git a/src/delta_barth/types.py b/src/delta_barth/types.py
index 48775dc..334a774 100644
--- a/src/delta_barth/types.py
+++ b/src/delta_barth/types.py
@@ -33,15 +33,6 @@ class CurrentConnection:
         self._session_token: str | None = None
         self._logged_in: bool = False
 
-    def __getitem__(self, key: str) -> str:
-        return self.headers[key]
-
-    def __contains__(self, key: str) -> bool:
-        return key in self.headers
-
-    def as_dict(self) -> HttpContentHeaders:
-        return self.headers
-
     @property
     def headers(self) -> HttpContentHeaders:
         return self._headers
@@ -68,7 +59,7 @@ class CurrentConnection:
         self._logged_in = True
 
     def remove_session_token(self) -> None:
-        if "DelecoToken" in self:
+        if "DelecoToken" in self.headers:
             del self._headers["DelecoToken"]
             self._session_token = None
             self._logged_in = False