I have a segment which can have many comments and each comment can have many tags. I can bind the comments to the segments using code like the below which is a function in the segment model class.

function prepareForGettingSegmentsWithComments() {
  $this->bindModel(
   array('hasMany' => array(
     'Comment' => array(
      'className' => 'Comment',
      'foreignKey'    => 'segmentID'

     )
    )
   )
  ); 
 }

However how can I bind in the Tags as well?