code: function(dirname, fileRegexp, callback) {
        var t = this;
  
        // Get the directory at this level
        FS.readdir(dirname, function(error, fileNames) {
  
          // Process errors
          if (error) {
            console.error('Read dir error', error);
            return callback(error);
          }
  
          // Process sequentially until content is found.
          // If parallel, a deep scan would occur every time.
          var dirsToCheck = [];
          function checkNext() {
  
            // Done checking all filenames
            if (fileNames.length === 0) {
  
              // Check directories, and return true if any have content
              t.trimDirs(dirsToCheck, function(error, trimmed) {
                return callback(error, trimmed.length > 0);
              });
              return;
            }
  
            // Stat the next entry
            var filename = fileNames[0];
            fileNames.splice(0,1);
            var pathName = Path.join(dirname, filename);
            FS.stat(pathName, function(error, stat) {
              if (error) {
                return callback(error);
              }
  
              // Check for directory content or if a file should be included
              if (stat.isDirectory()) {
                dirsToCheck.push({path:pathName});
              }
              else {
                // There is content if a file exists and it matches an optional regexp
                if (!fileRegexp || fileRegexp.test(filename)) {
                  return callback(null, true);
                }
              }
  
              // Check the next filename
              checkNext();
            });
          }
  
          // Kick off the first check
          checkNext();
        });
      }
docs: Determine if a directory has any contents.
  
  This will return true if any sub-directories with contents exist, or
  if any files with the specified RegExp exist.
  
  @method hasContents
  @param dirname {Path} Full path to the directory
  @param fileRegexp {RegExp} Regular expression to test for files
  @param callback {function(error, hasContents}} Regular expression to test for files