Add missing documentation

python/lsst/daf/butler/remote_butler/_remote_butler.py

@@ -560,18 +560,24 @@ def _get_url(self, path: str, version: str = "v1") -> str:
         return f"{version}/{path}"
 
     def _post(self, path: str, model: _BaseModelCompat) -> httpx.Response:
+        """Send a POST request to the Butler server."""
         json = model.model_dump_json(exclude_unset=True).encode("utf-8")
         url = self._get_url(path)
         return self._client.post(url, content=json, headers={"content-type": "application/json"})
 
     def _get(self, path: str) -> httpx.Response:
+        """Send a GET request to the Butler server."""
         url = self._get_url(path)
         return self._client.get(url)
 
     def _parse_model(self, response: httpx.Response, model: Type[_AnyPydanticModel]) -> _AnyPydanticModel:
+        """Deserialize a Pydantic model from the body of an HTTP response."""
         return model.model_validate_json(response.content)
 
     def _normalize_collections(self, collections: str | Sequence[str] | None) -> CollectionList:
+        """Convert the ``collections`` parameter in the format used by Butler
+        methods to a standardized format for the REST API.
+        """
         if collections is None:
             if not self.collections:
                 raise NoDefaultCollectionError(
@@ -585,6 +591,9 @@ def _normalize_collections(self, collections: str | Sequence[str] | None) -> Col
         return CollectionList(list(wildcards.strings))
 
     def _normalize_dataset_type_name(self, datasetTypeOrName: DatasetType | str) -> DatasetTypeName:
+        """Convert DatasetType parameters in the format used by Butler methods
+        to a standardized string name for the REST API.
+        """
         if isinstance(datasetTypeOrName, DatasetType):
             return DatasetTypeName(datasetTypeOrName.name)
         else:

python/lsst/daf/butler/remote_butler/server/handlers/_external.py

@@ -150,7 +150,11 @@ def find_dataset(
     return ref.to_simple() if ref else None
 
 
-@external_router.get("/v1/get_file/{dataset_id}")
+@external_router.get(
+    "/v1/get_file/{dataset_id}",
+    summary="Lookup via DatasetId (UUID) the information needed to download and use the files associated"
+    " with a dataset.",
+)
 def get_file(
     dataset_id: uuid.UUID,
     factory: Factory = Depends(factory_dependency),
@@ -162,7 +166,11 @@ def get_file(
     return _get_file_by_ref(butler, ref)
 
 
-@external_router.post("/v1/get_file_by_data_id")
+@external_router.post(
+    "/v1/get_file_by_data_id",
+    summary="Lookup via DataId (metadata key/value pairs) the information needed to download"
+    " and use the files associated with a dataset.",
+)
 def get_file_by_data_id(
     request: GetFileByDataIdRequestModel,
     factory: Factory = Depends(factory_dependency),
@@ -181,5 +189,6 @@ def get_file_by_data_id(
 
 
 def _get_file_by_ref(butler: Butler, ref: DatasetRef) -> GetFileResponseModel:
+    """Return file information associated with ``ref``."""
     payload = butler._datastore.prepare_get_for_external_client(ref)
     return GetFileResponseModel.model_validate(payload)

python/lsst/daf/butler/remote_butler/server_models.py

@@ -50,6 +50,8 @@ class FindDatasetModel(_BaseModelCompat):
 
 
 class GetFileByDataIdRequestModel(_BaseModelCompat):
+    """Request model for ``get_file_by_data_id``."""
+
     dataset_type_name: DatasetTypeName
     data_id: SerializedDataId
     collections: CollectionList