code: function getReferences( componentDir, level, levelPath, referenceFile, referenceDrawer ) {
  
    // Read directory items.
    var componentPath = path.join( process.cwd(), componentDir );
    var items = fs.readdirSync( componentPath );
  
    items.forEach( function ( item ) {
  
      var itemPath = path.join( componentDir, item );
      var prefix = levelPath === '' ? '' : levelPath + '/';
  
      // Get item info.
      var stats = fs.statSync( path.join( process.cwd(), itemPath ) );
      if (stats.isDirectory()) {
  
        // Get language specific references.
        if (level === 0)
          getReferences( itemPath, level + 1, prefix + item, referenceFile, referenceDrawer );
      }
      else if (stats.isFile()) {
  
        var ext = path.extname( item );
        if (ext === '.txt' && path.basename( item ) === referenceFile) {
  
          // Read reference file.
          var componentPath = prefix + path.basename( item, ext );
          referenceDrawer.add( componentPath, getReference( itemPath ) );
          logger.fileProcessed( 'Reference', itemPath );
        }
      }
    } )
  }
docs: Reads all references in a component sub-directory.
  @param {string} componentDir - The path of the component sub-directory.
  @param {number} level - The level depth compared to the components directory.
  @param {string} levelPath - The base URL of the component sub-directory.
  @param {string} referenceFile - The name of the reference files.
  @param {ReferenceDrawer} referenceDrawer - The reference storage.