nl_tokens: A convenient way to set nested attributes .
pl_tokens: function ( attrs , value , opt ) { var currentAttrs = this . <mask> ( 'attrs' ) ; var delim = '/' ; if ( _ . isString ( attrs ) ) { // Get/set an attribute by a special path syntax that delimits // nested objects by the colon character. if ( value ) { var attr = { } ; joint . util . setByPath ( attr , attrs , value , delim ) ; return this . set ( 'attrs' , _ . merge ( { } , currentAttrs , attr ) , opt ) ; } else { return joint . util . getByPath ( currentAttrs , attrs , delim ) ; } } return this . set ( 'attrs' , _ . merge ( { } , currentAttrs , attrs ) , value ) ; }