code: function(encoder) {
      if ( pslBuffer8 === undefined ) { return ''; }
      if ( encoder instanceof Object ) {
          const bufferStr = encoder.encode(pslBuffer8.buffer, pslByteLength);
          return `${SELFIE_MAGIC}\t${bufferStr}`;
      }
      return {
          magic: SELFIE_MAGIC,
          buf32: Array.from(
              new Uint32Array(pslBuffer8.buffer, 0, pslByteLength >>> 2)
          ),
      };
  }
docs: ***************************************************************************