# use chrono::{DateTime, Utc};
# use serde::{Deserialize, Serialize};
#
# #[derive(Deserialize, Serialize, Debug)]
# #[serde(deny_unknown_fields)]
# struct PersonV1 {
# name: String,
# }
#
# #[derive(Deserialize, Serialize, Debug)]
# #[serde(deny_unknown_fields)]
# struct PersonV2 {
# name: String,
# updated_at: DateTime<Utc>,
# }
#
# // First define how to map from one struct to another
# impl From<PersonV1> for PersonV2 {
# fn from(value: PersonV1) -> Self {
# PersonV2 {
# name: value.name.clone(),
# updated_at: Utc::now(),
# }
# }
# }
#