프로젝트 수준 : build.gradle plugins { id 'org.jetbrains.kotlin.plugin.serialization' version '1.7.10' } app 수준 : build.gradle plugins { id 'org.jetbrains.kotlin.plugin.serialization' } dependencies { implementation 'com.squareup.retrofit2:retrofit:2.9.0' implementation "org.jetbrains.kotlinx:kotlinx-serialization-json:1.4.0" implementation("com.jakewharton.retrofit:retrofit2-kotlinx-serialization-con..