that's too much!

.venv/lib/python3.12/site-packages/pyproj/_transformer.pxd

@@ -0,0 +1,26 @@
+include "proj.pxi"
+
+from pyproj._crs cimport _CRS, Base
+
+
+cdef class _TransformerGroup:
+    cdef PJ_CONTEXT* context
+    cdef readonly object _context_manager
+    cdef readonly list _transformers
+    cdef readonly list _unavailable_operations
+    cdef readonly list _best_available
+
+cdef class _Transformer(Base):
+    cdef PJ_PROJ_INFO proj_info
+    cdef readonly _area_of_use
+    cdef readonly str type_name
+    cdef readonly tuple _operations
+    cdef readonly _CRS _source_crs
+    cdef readonly _CRS _target_crs
+
+    @staticmethod
+    cdef _Transformer _from_pj(
+        PJ_CONTEXT* context,
+        PJ *transform_pj,
+        bint always_xy,
+    )