Function for_each_peer_uuid_with 

pub fn for_each_peer_uuid_with<F: FnMut(&str)>(
    entry: &LogEntry,
    extra_var: impl Fn(&str) -> bool,
    f: F,
)

Call f with every peer-leg UUID entry mentions, treating a variable as peer-bearing when it is in PEER_UUID_VARS or extra_var accepts its name.

Walks only structured variable assignments — CHANNEL_DATA fields, standalone variable lines, set/export/bridge executions. Scanning the raw message and attached text instead would harvest shared-context variables (a FusionPBX domain_uuid, say) and pull in every unrelated call in the same tenant.