nl_tokens: Retrieve the sitemap from a url and call to parse it .
pl_tokens: function getUrl ( options , parseFn , callback ) { request ( { url : options . source , encoding : null , timeout : options . timeout ( ) // get the default timeout } , function ( err , res , body ) { var error = err || <mask> . checkResponse ( res , [ "text/xml" , "application/xml" ] ) ; if ( error ) { callback ( common . prependMsgToErr ( error , options . source , true ) ) ; } else { convert ( options , body , parseFn , callback ) ; } } ) ; }