🌱 Add _isMultisignatureAccount

framework/src/modules/auth/module.ts

@@ -38,7 +38,7 @@ import {
 	genesisAuthStoreSchema,
 	registerMultisignatureParamsSchema,
 } from './schemas';
-import { AuthAccount, GenesisAuthStore } from './types';
+import { AuthAccount, GenesisAuthStore, ImmutableStoreCallback } from './types';
 import {
 	getIDAsKeyForStore,
 	isMultisignatureAccount,
@@ -252,4 +252,27 @@ export class AuthModule extends BaseModule {
 			authAccountSchema,
 		);
 	}
+
+	// TODO: Changed it to private once implemented
+	protected async _isMultisignatureAccount(
+		getStore: ImmutableStoreCallback,
+		address: Buffer,
+	): Promise<boolean> {
+		const authSubstore = getStore(getIDAsKeyForStore(MODULE_ID_AUTH), STORE_PREFIX_AUTH);
+		try {
+			const authAccount = await authSubstore.getWithSchema<AuthAccount>(address, authAccountSchema);
+
+			if (authAccount.numberOfSignatures === 0) {
+				return false;
+			}
+
+			return true;
+		} catch (error) {
+			if (!(error instanceof NotFoundError)) {
+				throw error;
+			}
+
+			return false;
+		}
+	}
 }