Function execute_recursive_mutation 

pub async fn execute_recursive_mutation<E, P, C>(
    request: DavMutationRequest,
    enumerator: &E,
    port: &P,
    cancellation: &C,
    limits: DavMutationExecutorLimits,
) -> DavMutationOutcome
where
    E: DavDirectoryEnumerator,
    P: DavMutationPort,
    C: DavCancellation,

Executes a bounded recursive COPY, MOVE, or DELETE.

A collection failure prunes that subtree. Failures in one child are recorded while eligible siblings continue. Collection removal is post-order and is skipped after any descendant failure, preserving namespace consistency.

Errors

Invalid request shapes return a typed backend-style stop outcome rather than invoking the port.