bit-docs-process-tags/process-tags module
    processTags(options, callback)
  
  Use this module to process a TagBlock and use any matching Tag in the TagCollection to further process the line and return a new DocObject.
Parameters
- options 
{ProcessTagsOptions}:The block to process and the TagCollection.
Notable options:
tags: TagCollection to draw from.comment: TagBlock being processed.
 - callback 
{ProcessorCallback(newDoc, newScope)}:Callback to call when done processing.
The new DocObject might be null if no Tags in the TagCollection matched a line in the TagBlock.
 
Use
This module manages a ProcessTagsStack using ProcessTagsCommand commands.
Plugins add to the TagCollection using the
tags hook so the Tag processing rules are applied when
processing blocks.