nl_tokens: Returns a buffer of length 2 representing the clock identifier
pl_tokens: function getClockId ( clockId ) { let buffer = clockId ; if ( typeof clockId === 'string' ) { buffer = utils . allocBufferFromString ( clockId , 'ascii' ) ; } if ( ! ( buffer instanceof Buffer ) ) { //Generate buffer = getRandomBytes ( 2 ) ; } else if ( <mask> . length !== 2 ) { throw new Error ( 'Clock identifier must have 2 bytes' ) ; } return buffer ; }