Implement use of a custom fetch fn

src/modules/locationFilter.ts

@@ -4,12 +4,13 @@ import type { BaseClient, ApiResult } from '../lib/base.js';
 export class LocationFilterModule {
     constructor(private client: BaseClient) {}
 
-    async getLocationFilterData(): Promise<ApiResult<ApiLocationFilter.LocationFilterObject[]>> {
+    async getLocationFilterData(customFetch?: typeof fetch): Promise<ApiResult<ApiLocationFilter.LocationFilterObject[]>> {
         const path = '/locationFilter/data';
 
         return this.client.request<ApiLocationFilter.LocationFilterObject[]>(
             path,
-            {method: "GET"}
+            {method: "GET"},
+            customFetch,
         );
     }
 }