ate HTML documentation for the specified package's API. @type projectName: C{str} @param projectName: The name of the package for which to generate documentation. @type projectURL: C{str} @param projectURL: The location (probably an HTTP URL) of the project on the web. @type sourceURL: C{str} @param sourceURL: The location (probably an HTTP URL) of the root of the source browser for the project. @type packagePath: L{FilePath} @param packagePath: The path to the top-level of the package named by C{projectName}. @type outputPath: L{FilePath} @param outputPath: An existing directory to which the generated API documentation will be written. z --intersphinxr