fn is_false(t: &bool) -> bool {
!t
}
#[derive(Debug, Serialize, Deserialize, Clone)]
pub struct Invite {
#[serde(rename = "_id")]
pub id: String,
#[serde(skip_serializing_if = "is_false", default)]
pub used: bool,
#[serde(skip_serializing_if = "Option::is_none")]
pub claimed_by: Option<String>,
}