attrEnd
    attrEnd(attrName, lineNo)
  
  Called at the end of parsing an attribute; after the [can-view-parser.ParserHandler.attrStart] and [can-view-parser.ParserHandler.attrValue] functions have been called.
Parameters
- attrName 
{String}:The name of the attribute.
 - lineNo 
{Number}:The line number of the opening tag (undefined in production).