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use rsip_derives::UntypedHeader; use uuid::Uuid; /// The `Call-ID` header in its [untyped](super) form. #[derive(UntypedHeader, Debug, PartialEq, Eq, Clone)] #[header(display_name = "Call-ID")] pub struct CallId(String); impl Default for CallId { fn default() -> Self { Self(format!("{}@example.com", Uuid::new_v4().to_string())) } }