def build(self, projectName, projectURL, sourceURL, packagePath,
              outputPath):
        """
        Call pydoctor's entry point with options which will generate 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.
        """
        intersphinxes = []

        for intersphinx in intersphinxURLs:
            intersphinxes.append("--intersphinx")
            intersphinxes.append(intersphinx)

        # Super awful monkeypatch that will selectively use our templates.
        from pydoctor.templatewriter import util
        originalTemplatefile = util.templatefile

        def templatefile(filename):

            if filename in ["summary.html", "index.html", "common.html"]:
                twistedPythonDir = FilePath(__file__).parent()
                templatesDir = twistedPythonDir.child("_pydoctortemplates")
                return templatesDir.child(filename).path
            else:
                return originalTemplatefile(filename)

        monkeyPatch = MonkeyPatcher((util, "templatefile", templatefile))
        monkeyPatch.patch()

        from pydoctor.driver import main

        args = [u"--project-name", projectName,
                u"--project-url", projectURL,
                u"--system-class", u"twisted.python._pydoctor.TwistedSystem",
                u"--project-base-dir", packagePath.parent().path,
                u"--html-viewsource-base", sourceURL,
                u"--add-package", packagePath.path,
                u"--html-output", outputPath.path,
                u"--html-write-function-pages", u"--quiet", u"--make-html",
               ] + intersphinxes
        args = [arg.encode("utf-8") for arg in args]
        main(args)

        monkeyPatch.restore()

        Call pydoctor's entry point with options which will generate 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.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/python/_release.py