Remove custom __getattr__ and __setattr__ for camelCase fields

Author: holtskinner

src/a2a/_base.py

@@ -1,7 +1,3 @@
-import warnings
-
-from typing import Any, ClassVar
-
 from pydantic import BaseModel, ConfigDict
 from pydantic.alias_generators import to_camel
 
@@ -40,64 +36,3 @@ class A2ABaseModel(BaseModel):
         serialize_by_alias=True,
         alias_generator=to_camel_custom,
     )
-
-    # Cache for the alias -> field_name mapping.
-    # It starts as None and is populated on first access.
-    _alias_to_field_name_map: ClassVar[dict[str, str] | None] = None
-
-    @classmethod
-    def _get_alias_map(cls) -> dict[str, str]:
-        """Lazily builds and returns the alias-to-field-name mapping for the class.
-
-        The map is cached on the class object to avoid re-computation.
-        """
-        if cls._alias_to_field_name_map is None:
-            cls._alias_to_field_name_map = {
-                field.alias: field_name
-                for field_name, field in cls.model_fields.items()
-                if field.alias is not None
-            }
-        return cls._alias_to_field_name_map
-
-    def __setattr__(self, name: str, value: Any) -> None:
-        """Allow setting attributes via their camelCase alias."""
-        # Get the map and find the corresponding snake_case field name.
-        field_name = type(self)._get_alias_map().get(name)  # noqa: SLF001
-
-        if field_name:
-            # An alias was used, issue a warning.
-            warnings.warn(
-                (
-                    f"Setting field '{name}' via its camelCase alias is deprecated and will be removed in version 0.3.0 "
-                    f"Use the snake_case name '{field_name}' instead."
-                ),
-                DeprecationWarning,
-                stacklevel=2,
-            )
-
-        # If an alias was used, field_name will be set; otherwise, use the original name.
-        super().__setattr__(field_name or name, value)
-
-    def __getattr__(self, name: str) -> Any:
-        """Allow getting attributes via their camelCase alias."""
-        # Get the map and find the corresponding snake_case field name.
-        field_name = type(self)._get_alias_map().get(name)  # noqa: SLF001
-
-        if field_name:
-            # An alias was used, issue a warning.
-            warnings.warn(
-                (
-                    f"Accessing field '{name}' via its camelCase alias is deprecated and will be removed in version 0.3.0 "
-                    f"Use the snake_case name '{field_name}' instead."
-                ),
-                DeprecationWarning,
-                stacklevel=2,
-            )
-
-            # If an alias was used, retrieve the actual snake_case attribute.
-            return getattr(self, field_name)
-
-        # If it's not a known alias, it's a genuine missing attribute.
-        raise AttributeError(
-            f"'{type(self).__name__}' object has no attribute '{name}'"
-        )