nl_tokens: Get a buffer from an array of strings .
pl_tokens: function array ( arr ) { var buffers = [ ] , buf , i , len = 0 ; for ( i = 0 ; i < arr . length ; i ++ ) { buf = this . getStringBuffer ( arr [ i ] ) ; len += buf . length ; buffers . <mask> ( buf ) ; } return Buffer . concat ( buffers , len ) ; }