Merge pull request #91 from dstansby/to-zarr-typing

Fix GroupSpec.from_zarr typing

Author: d-v-b

src/pydantic_zarr/v3.py

@@ -593,7 +593,7 @@ def to_flat(self, root_path: str = "") -> dict[str, AnyArraySpec | AnyGroupSpec]
         return to_flat(self, root_path=root_path)
 
     @classmethod
-    def from_zarr(cls, group: zarr.Group, *, depth: int = -1) -> GroupSpec[TAttr, TItem]:
+    def from_zarr(cls, group: zarr.Group, *, depth: int = -1) -> Self:
         """
         Create a GroupSpec from a zarr group. Subgroups and arrays contained in the zarr
         group will be converted to instances of GroupSpec and ArraySpec, respectively,