Add annotations.

Author: thewhaleking

async_substrate_interface/async_substrate.py

@@ -1361,9 +1361,9 @@ async def get_metadata_errors(
 
     async def get_metadata_error(
         self,
-        module_name,
-        error_name,
-        block_hash=None,
+        module_name: str,
+        error_name: str,
+        block_hash: Optional[str] = None,
         runtime: Optional[Runtime] = None,
     ):
         """
@@ -3096,9 +3096,9 @@ async def get_metadata_constants(self, block_hash=None) -> list[dict]:
 
     async def get_metadata_constant(
         self,
-        module_name,
-        constant_name,
-        block_hash=None,
+        module_name: str,
+        constant_name: str,
+        block_hash: Optional[str] = None,
         runtime: Optional[Runtime] = None,
     ):
         """

async_substrate_interface/types.py

@@ -645,8 +645,8 @@ def is_valid_ss58_address(self, value: str) -> bool:
     def serialize_storage_item(
         self,
         storage_item: ScaleType,
-        module,
-        spec_version_id,
+        module: str,
+        spec_version_id: int,
         runtime: Optional[Runtime] = None,
     ) -> dict:
         """