pub trait CellAreaContextImplExt: ObjectSubclass {
    fn parent_reset(&self);
    fn parent_preferred_height_for_width(&self, width: i32) -> (i32, i32);
    fn parent_preferred_width_for_height(&self, height: i32) -> (i32, i32);
    fn parent_allocate(&self, width: i32, height: i32);
}

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