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Technical Overview
  internal package Foswiki::Access::TopicACLAccess  
Implements the traditional, longstanding ACL in topic preference style.
 ObjectMethod haveAccess($mode, $User, $web, $topic, $attachment) → $boolean 
 ObjectMethod haveAccess($mode, $User, $meta) → $boolean 
 ObjectMethod haveAccess($mode, $User, $address) → $boolean 
 
-  $mode- 'VIEW', 'CHANGE', 'CREATE', etc. (defaults to VIEW)
-  $cUID- Canonical user id (defaults to current user)
 
Check if the user has the given mode of access to the topic. This call
may result in the topic being read.