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//! In sub, [`Thing2`] is like [`Thing1`].
//!
//! [`Thing2`]: sub::Thing2

/// Like [`crate::Thing1`] but more sub, is [`Thing2`].
pub struct Thing2 {
}

impl Thing2 {
    /// See also [`crate::Thing1`] and [`Thing2`].
    pub fn op_c(&self) {
    }
}