code: function convertTheme(str) {
    var theme = plist.parse(str)
    theme.settings = convertArray(theme.settings)
    return theme
  }
docs: Converts a loaded tmTheme file into a theme in VS Code format.
  The returned object can be passed to `JSON.stringify()` to produce a valid
  VS Code theme file.
  @return a javascript object
  @param {String} str - xml string (in plist format)