class Net::IMAP::CopyUIDData

def source_uid_for(assigned_uid)

Related: assigned_uid_for, each_uid_pair, uid_mapping

This is the reverse of #assigned_uid_for.

+assigned_uid+ in the source mailbox.
Returns the UID in the source mailbox for the message that was copied to

source_uid_for(assigned_uid) -> uid
:call-seq: 
def source_uid_for(assigned_uid)
  idx = assigned_uids.find_ordered_index(assigned_uid) and
    source_uids.ordered_at(idx)
end