修复类型错误

app/api/v1/endpoints/network/geometry.py

@@ -21,7 +21,7 @@ async def fastapi_get_coord(network: str, node: str) -> dict[str, Any]:
 
 # example: set_coord(p, ChangeSet({'node': 'j1', 'x': 1.0, 'y': 2.0}))
 @router.post("/setcoord/", response_model=None)
-async def fastapi_set_coord(network: str, req: Request) -> ChangeSet:
+async def fastapi_set_coord(network: str, req: Request) -> "ChangeSet":
     props = await req.json()
     return set_coord(network, ChangeSet(props))
 
@@ -76,5 +76,5 @@ async def fastapi_get_all_coords(network: str) -> list[Any]:
 @router.get("/projectcoordinates/")
 async def fastapi_project_coordinates(
     network: str, from_epsg: int, to_epsg: int
-) -> ChangeSet:
+) -> "ChangeSet":
     return project_coordinates(network, from_epsg, to_epsg)