suspend
다음 dependency를 추가하세요. dependencies{ implementation ( "androidx.room:room-ktx:2.3.0" ) } 아래 페이지에서 Room KTX를 참고하세요 ref: https://developer.android.com/kotlin/ktx?hl=ko&gclid=CjwKCAjwy7CKBhBMEiwA0Eb7avvvtjzXiG_maWPBzaDvznHa4nXSiJ3K2MxSwx_DIU7vT5wvif4S5hoCP7sQAvD_BwE&gclsrc=aw.ds#room