Enum MergeStrategy 

pub enum MergeStrategy {
    Union,
    Intersection,
    PreferFirst,
    PreferSecond,
}

A merge strategy for combining two serialized declaration lists.

Variants

Union

Keep all declarations from both lists.

Intersection

Keep only declarations present in both (by name).

PreferFirst

Prefer the first list; only add from second if not in first.

PreferSecond

Prefer the second list; only add from first if not in second.