fix: add type annotation for _cache_genome to fix mypy error

Tanisha127 · Tanisha127 · commit 4a7268c4320c · 2026-02-27T20:59:35.000+05:30
diff --git a/malariagen_data/anoph/genome_sequence.py b/malariagen_data/anoph/genome_sequence.py
@@ -16,6 +16,8 @@
 
 
 class AnophelesGenomeSequenceData(AnophelesBase):
+    _cache_genome: Optional[zarr.hierarchy.Group]
+
     def __init__(
         self, virtual_contigs: Optional[Mapping[str, Sequence[str]]] = None, **kwargs
     ):
