diff --git a/lib/ControlModel.ts b/lib/ControlModel.ts
index 0fe7efc..6810a6c 100644
--- a/lib/ControlModel.ts
+++ b/lib/ControlModel.ts
@@ -24,6 +24,10 @@ export abstract class ControlModel extends Assignable {
     }
   }
 
+  public get_data (): Record<string, string|number|boolean> {
+    return super.get_data () as Record<string, string|number|boolean>;
+  }
+
   public get (key: string): string|number|boolean {
     return this.data[key] as string|number|boolean;
   }
diff --git a/lib/DatabaseModel.ts b/lib/DatabaseModel.ts
index ddf0ec2..3cdcd5d 100644
--- a/lib/DatabaseModel.ts
+++ b/lib/DatabaseModel.ts
@@ -36,6 +36,10 @@ export abstract class DatabaseModel extends Assignable {
     this.data[key] = value;
   }
 
+  public get_data (): Record<string, string|number|boolean> {
+    return super.get_data () as Record<string, string|number|boolean>;
+  }
+
   public abstract async read(): Promise<boolean>;
   public abstract async write(): Promise<boolean>;
   public abstract async delete(): Promise<boolean>;