prompt: We are currently solving the following issue within our repository. Here is the issue text:
  --- BEGIN ISSUE ---
  StaticFilesConfig and virtual directories
  I'm trying to write a ``FileSystemProtocol`` to load files from the package data using [importlib_resources](https://importlib-resources.readthedocs.io/en/latest/using.html#). But because ``directories`` is defined as ``DirectoryPath``, pydantic checks if the given directories exist in the local filesystem. 
  
  This is not generally true, especially in any kind of virtual filesystem (e.g. a zipped package). I think this condition should be relaxed to support virtual filesystems.
  
  https://github.com/starlite-api/starlite/blob/9bb6dcd57c10a591377cf8e3a537e9292566d5b9/starlite/config/static_files.py#L32
  
  --- END ISSUE ---
  
  Below are some code segments, each from a relevant file. One or more of these files may contain bugs.
  --- BEGIN FILES ---
  Path: `litestar/contrib/sqlalchemy/plugins/__init__.py`
  Content:
  ```
  1 from __future__ import annotations
  2 
  3 from .init import (
  4     AsyncSessionConfig,
  5     EngineConfig,
  6     GenericSessionConfig,
  7     GenericSQLAlchemyConfig,
  8     SQLAlchemyAsyncConfig,
  9     SQLAlchemyInitPlugin,
  10     SQLAlchemySyncConfig,
  11     SyncSessionConfig,
  12 )
  13 from .serialization import SQLAlchemySerializationPlugin
  14 
  15 
  16 class SQLAlchemyPlugin(SQLAlchemyInitPlugin, SQLAlchemySerializationPlugin):
  17     """A plugin that provides SQLAlchemy integration."""
  18 
  19     def __init__(self, config: SQLAlchemyAsyncConfig | SQLAlchemySyncConfig) -> None:
  20         SQLAlchemyInitPlugin.__init__(self, config=config)
  21         SQLAlchemySerializationPlugin.__init__(self)
  22 
  23 
  24 __all__ = (
  25     "AsyncSessionConfig",
  26     "EngineConfig",
  27     "GenericSQLAlchemyConfig",
  28     "GenericSessionConfig",
  29     "SQLAlchemyAsyncConfig",
  30     "SQLAlchemyInitPlugin",
  31     "SQLAlchemyPlugin",
  32     "SQLAlchemySerializationPlugin",
  33     "SQLAlchemySyncConfig",
  34     "SyncSessionConfig",
  35 )
  36
  ```
  --- END FILES ---
  
  Please first localize the bug based on the issue statement, and then generate a patch according to the `git diff` format fenced by three backticks.
  
  Here is an example:
  
  ```diff
  diff --git a/examples/server_async.py b/examples/server_async.py
  --- a/examples/server_async.py
  +++ b/examples/server_async.py
  @@ -313,4 +313,4 @@
   
   
   if __name__ == "__main__":
  -    asyncio.run(run_async_server("."), debug=True)
  +    asyncio.run(run_async_server(), debug=True)
  diff --git a/examples/server_sync.py b/examples/server_sync.py
  --- a/examples/server_sync.py
  +++ b/examples/server_sync.py
  @@ -313,5 +313,5 @@
   
   
   if __name__ == "__main__":
  -    server = run_sync_server(".")
  +    server = run_sync_server()
       server.shutdown()
  
  ```
  
golden_diff: diff --git a/litestar/contrib/sqlalchemy/plugins/__init__.py b/litestar/contrib/sqlalchemy/plugins/__init__.py
  --- a/litestar/contrib/sqlalchemy/plugins/__init__.py
  +++ b/litestar/contrib/sqlalchemy/plugins/__init__.py
  @@ -1,5 +1,10 @@
   from __future__ import annotations
   
  +from typing import TYPE_CHECKING
  +
  +from litestar.contrib.sqlalchemy.plugins import _slots_base
  +from litestar.plugins import InitPluginProtocol
  +
   from .init import (
       AsyncSessionConfig,
       EngineConfig,
  @@ -12,13 +17,29 @@
   )
   from .serialization import SQLAlchemySerializationPlugin
   
  +if TYPE_CHECKING:
  +    from litestar.config.app import AppConfig
  +
   
  -class SQLAlchemyPlugin(SQLAlchemyInitPlugin, SQLAlchemySerializationPlugin):
  +class SQLAlchemyPlugin(InitPluginProtocol, _slots_base.SlotsBase):
       """A plugin that provides SQLAlchemy integration."""
   
       def __init__(self, config: SQLAlchemyAsyncConfig | SQLAlchemySyncConfig) -> None:
  -        SQLAlchemyInitPlugin.__init__(self, config=config)
  -        SQLAlchemySerializationPlugin.__init__(self)
  +        """Initialize ``SQLAlchemyPlugin``.
  +
  +        Args:
  +            config: configure DB connection and hook handlers and dependencies.
  +        """
  +        self._config = config
  +
  +    def on_app_init(self, app_config: AppConfig) -> AppConfig:
  +        """Configure application for use with SQLAlchemy.
  +
  +        Args:
  +            app_config: The :class:`AppConfig <.config.app.AppConfig>` instance.
  +        """
  +        app_config.plugins.extend([SQLAlchemyInitPlugin(config=self._config), SQLAlchemySerializationPlugin()])
  +        return app_config
   
   
   __all__ = (
  
verification_info: {"golden_diff": "diff --git a/litestar/contrib/sqlalchemy/plugins/__init__.py b/litestar/contrib/sqlalchemy/plugins/__init__.py\n--- a/litestar/contrib/sqlalchemy/plugins/__init__.py\n+++ b/litestar/contrib/sqlalchemy/plugins/__init__.py\n@@ -1,5 +1,10 @@\n from __future__ import annotations\n \n+from typing import TYPE_CHECKING\n+\n+from litestar.contrib.sqlalchemy.plugins import _slots_base\n+from litestar.plugins import InitPluginProtocol\n+\n from .init import (\n     AsyncSessionConfig,\n     EngineConfig,\n@@ -12,13 +17,29 @@\n )\n from .serialization import SQLAlchemySerializationPlugin\n \n+if TYPE_CHECKING:\n+    from litestar.config.app import AppConfig\n+\n \n-class SQLAlchemyPlugin(SQLAlchemyInitPlugin, SQLAlchemySerializationPlugin):\n+class SQLAlchemyPlugin(InitPluginProtocol, _slots_base.SlotsBase):\n     \"\"\"A plugin that provides SQLAlchemy integration.\"\"\"\n \n     def __init__(self, config: SQLAlchemyAsyncConfig | SQLAlchemySyncConfig) -> None:\n-        SQLAlchemyInitPlugin.__init__(self, config=config)\n-        SQLAlchemySerializationPlugin.__init__(self)\n+        \"\"\"Initialize ``SQLAlchemyPlugin``.\n+\n+        Args:\n+            config: configure DB connection and hook handlers and dependencies.\n+        \"\"\"\n+        self._config = config\n+\n+    def on_app_init(self, app_config: AppConfig) -> AppConfig:\n+        \"\"\"Configure application for use with SQLAlchemy.\n+\n+        Args:\n+            app_config: The :class:`AppConfig <.config.app.AppConfig>` instance.\n+        \"\"\"\n+        app_config.plugins.extend([SQLAlchemyInitPlugin(config=self._config), SQLAlchemySerializationPlugin()])\n+        return app_config\n \n \n __all__ = (\n", "issue": "StaticFilesConfig and virtual directories\nI'm trying to write a ``FileSystemProtocol`` to load files from the package data using [importlib_resources](https://importlib-resources.readthedocs.io/en/latest/using.html#). But because ``directories`` is defined as ``DirectoryPath``, pydantic checks if the given directories exist in the local filesystem. \r\n\r\nThis is not generally true, especially in any kind of virtual filesystem (e.g. a zipped package). I think this condition should be relaxed to support virtual filesystems.\r\n\r\nhttps://github.com/starlite-api/starlite/blob/9bb6dcd57c10a591377cf8e3a537e9292566d5b9/starlite/config/static_files.py#L32\n", "before_files": [{"content": "from __future__ import annotations\n\nfrom .init import (\n    AsyncSessionConfig,\n    EngineConfig,\n    GenericSessionConfig,\n    GenericSQLAlchemyConfig,\n    SQLAlchemyAsyncConfig,\n    SQLAlchemyInitPlugin,\n    SQLAlchemySyncConfig,\n    SyncSessionConfig,\n)\nfrom .serialization import SQLAlchemySerializationPlugin\n\n\nclass SQLAlchemyPlugin(SQLAlchemyInitPlugin, SQLAlchemySerializationPlugin):\n    \"\"\"A plugin that provides SQLAlchemy integration.\"\"\"\n\n    def __init__(self, config: SQLAlchemyAsyncConfig | SQLAlchemySyncConfig) -> None:\n        SQLAlchemyInitPlugin.__init__(self, config=config)\n        SQLAlchemySerializationPlugin.__init__(self)\n\n\n__all__ = (\n    \"AsyncSessionConfig\",\n    \"EngineConfig\",\n    \"GenericSQLAlchemyConfig\",\n    \"GenericSessionConfig\",\n    \"SQLAlchemyAsyncConfig\",\n    \"SQLAlchemyInitPlugin\",\n    \"SQLAlchemyPlugin\",\n    \"SQLAlchemySerializationPlugin\",\n    \"SQLAlchemySyncConfig\",\n    \"SyncSessionConfig\",\n)\n", "path": "litestar/contrib/sqlalchemy/plugins/__init__.py"}], "after_files": [{"content": "from __future__ import annotations\n\nfrom typing import TYPE_CHECKING\n\nfrom litestar.contrib.sqlalchemy.plugins import _slots_base\nfrom litestar.plugins import InitPluginProtocol\n\nfrom .init import (\n    AsyncSessionConfig,\n    EngineConfig,\n    GenericSessionConfig,\n    GenericSQLAlchemyConfig,\n    SQLAlchemyAsyncConfig,\n    SQLAlchemyInitPlugin,\n    SQLAlchemySyncConfig,\n    SyncSessionConfig,\n)\nfrom .serialization import SQLAlchemySerializationPlugin\n\nif TYPE_CHECKING:\n    from litestar.config.app import AppConfig\n\n\nclass SQLAlchemyPlugin(InitPluginProtocol, _slots_base.SlotsBase):\n    \"\"\"A plugin that provides SQLAlchemy integration.\"\"\"\n\n    def __init__(self, config: SQLAlchemyAsyncConfig | SQLAlchemySyncConfig) -> None:\n        \"\"\"Initialize ``SQLAlchemyPlugin``.\n\n        Args:\n            config: configure DB connection and hook handlers and dependencies.\n        \"\"\"\n        self._config = config\n\n    def on_app_init(self, app_config: AppConfig) -> AppConfig:\n        \"\"\"Configure application for use with SQLAlchemy.\n\n        Args:\n            app_config: The :class:`AppConfig <.config.app.AppConfig>` instance.\n        \"\"\"\n        app_config.plugins.extend([SQLAlchemyInitPlugin(config=self._config), SQLAlchemySerializationPlugin()])\n        return app_config\n\n\n__all__ = (\n    \"AsyncSessionConfig\",\n    \"EngineConfig\",\n    \"GenericSQLAlchemyConfig\",\n    \"GenericSessionConfig\",\n    \"SQLAlchemyAsyncConfig\",\n    \"SQLAlchemyInitPlugin\",\n    \"SQLAlchemyPlugin\",\n    \"SQLAlchemySerializationPlugin\",\n    \"SQLAlchemySyncConfig\",\n    \"SyncSessionConfig\",\n)\n", "path": "litestar/contrib/sqlalchemy/plugins/__init__.py"}]}