new DefaultApkSignerEngine.Builder(engineSignerConfigs, minSdkVersion) .setV1SigningEnabled(mV1SigningEnabled) .setV2SigningEnabled(mV2SigningEnabled) .setOtherSignersSignaturesPreserved(mOtherSignersSignaturesPreserved); if (mCreatedBy != null) { signerEngineBuilder.setCreatedBy(mCreatedBy); signerEngine = signerEngineBuilder.build();