Showing the idea of separating UI items with data layer items.

User.kt

// Easy to do this
@Entity
data class User(
  @PrimaryKey(autoGenerate = false)
  @field:Json(name = "id")
  val id: String = "",
  @field:Json(name = "display_name")
  val displayName: String? = null
)

// Better to do these
data class User(
  val id: String = "",
  val displayName: String? = null
)

@Entity
data class PersistableUser(
  @PrimaryKey(autoGenerate = false)
  val id: String,
  val displayName: String? = null
)

data class UserDTO(
  @field:Json(name = "id")
  val id: String? = null,
  @field:Json(name = "display_name")
  val displayName: String? = null
)