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#[derive(Debug, Serialize, Deserialize, Clone)]
#[serde(tag = "type", rename_all = "camelCase")]
pub enum LineSourceType {
    User  { 
        #[serde(rename = "userId")]
        user_id: String 
    },
    Room  { 
        #[serde(rename = "roomId")]
        room_id: String, 
        #[serde(rename = "userId")]
        user_id: String,
    },
    Group {
        #[serde(rename = "groupId")]
        group_id: String,
        #[serde(rename = "userId", default)]
        user_id:  String
    },
}

#[derive(Serialize, Deserialize, Clone)]
pub struct LineSource {
    #[serde(flatten, rename = "type")]
    pub kind: LineSourceType,
}

impl LineSource {
    pub fn new (kind: LineSourceType) -> LineSource {
        LineSource { kind }
    }
}