[core-api][experimental] custom_path_fs_io_manager

Author: OwenKephart

python_modules/dagster/dagster/_core/storage/fs_io_manager.py

@@ -9,7 +9,7 @@
     DagsterInvariantViolationError,
     Field as DagsterField,
 )
-from dagster._annotations import experimental
+from dagster._annotations import superseded
 from dagster._config import StringSource
 from dagster._config.pythonic_config import ConfigurableIOManagerFactory
 from dagster._core.definitions.events import AssetKey, AssetMaterialization
@@ -137,6 +137,7 @@ def create_io_manager(self, context: InitResourceContext) -> "PickledObjectFiles
     config_schema=FilesystemIOManager.to_config_schema(),
     description="Built-in filesystem IO manager that stores and retrieves values using pickling.",
 )
+@superseded(additional_warn_text="Use FilesystemIOManager directly instead")
 def fs_io_manager(init_context: InitResourceContext) -> "PickledObjectFilesystemIOManager":
     """Built-in filesystem IO manager that stores and retrieves values using pickling.
 
@@ -339,7 +340,6 @@ def load_input(self, context: InputContext) -> object:
 
 @dagster_maintained_io_manager
 @io_manager(config_schema={"base_dir": DagsterField(StringSource, is_required=True)})
-@experimental
 def custom_path_fs_io_manager(
     init_context: InitResourceContext,
 ) -> CustomPathPickledObjectFilesystemIOManager: