DartDoc(Directory rootDir, List<String> excludes, Directory sdkDir, List<Generator> generators, Directory outputDir, PackageMeta packageMeta, List<String> includes, { List<String> includeExternals: const [] })

Source 

DartDoc(this.rootDir, this.excludes, this.sdkDir, this.generators,
    this.outputDir, this.packageMeta, this.includes,
    {this.includeExternals: const []}) {
  _onCheckProgress = new StreamController(sync: true);
}