nl_tokens: Reads the . po file but only if it has not been loaded or has changed
pl_tokens: async function ( ) { if ( ! this . __mtime ) { return this . read ( ) ; } var poFile = this . getPoFilename ( ) ; let stat = await qx . tool . compiler . files . Utils . safeStat ( poFile ) ; if ( stat && this . __mtime == stat . mtime ) { return undefined ; } return this . <mask> ( ) ; }