nl_tokens: Get a list buffer .
pl_tokens: function list ( obj , vonly ) { var vtype = this . type ( 1 ) , key = ! vonly ? this . getStringBuffer ( obj . key ) : new Buffer ( 0 ) , len = this . getLengthEncoding ( obj . value . length , false ) , value = this . <mask> ( obj . value ) ; return Buffer . concat ( [ vtype , key , len , value ] , vtype . length + key . length + len . length + value . length ) }