class_docstr: This publisher adds a slack attachment with fields from the rule's description
  
  It can include such fields as "reference" or "playbook" but will NOT include the description
  or the author.
class_docstr_tok: ["This","publisher","adds","a","slack","attachment","with","fields","from","the","rule","'s","description","It","can","include","such","fields","as","``","reference","''","or","``","playbook","''","but","will","NOT","include","the","description","or","the","author","."]
code: def _color():
      return LIMA
  
imports: import calendar
  import cgi
  import json
  import urllib.request, urllib.parse, urllib.error
  from streamalert.shared.publisher import AlertPublisher, Register
  from streamalert.shared.description import RuleDescriptionParser
label_desc: Use image node_id 2 for calling the AttachRuleInfo obj's underlying member method code with example usage: obj._color() and returns: LIMA