Trait vector::transforms::reduce::merge_strategy::ReduceValueMerger    
source · pub trait ReduceValueMerger: Debug + Send + Sync {
    // Required methods
    fn add(&mut self, v: Value) -> Result<(), String>;
    fn insert_into(
        self: Box<Self>,
        path: &OwnedTargetPath,
        v: &mut LogEvent,
    ) -> Result<(), String>;
}