fix(core): Fix concurrency and download handling in HandelsRegister class and adjust test cases

ts/classes.businessrecord.ts

@@ -5,6 +5,18 @@ export class BusinessRecord extends plugins.smartdata.SmartDataDbDoc<
   BusinessRecord,
   BusinessRecord
 > {
+  // STATIC
+  public static getByGermanParsedRegistration = async (parsedGermanRegistrationArg: BusinessRecord['data']['germanParsedRegistration']) => {
+    const businessRecords = await BusinessRecord.getInstance({
+      data: {
+        germanParsedRegistration: parsedGermanRegistrationArg,
+      }
+    });
+    return businessRecords;
+  };
+
+
+  // INSTANCE
   @plugins.smartdata.unI()
   id: string;