Call pydoctor's entry point with options which will generate HTML 
documentation for the specified package's API.
| Parameters | projectName | The name of the package for which to generate documentation.
 (type: str
) | 
 | projectURL | The location (probably an HTTP URL) of the project on the web.
 (type: str
) | 
 | sourceURL | The location (probably an HTTP URL) of the root of the source browser 
for the project.
 (type: str
) | 
 | packagePath | The path to the top-level of the package named by 
projectName.
 (type: FilePath
) | 
 | outputPath | An existing directory to which the generated API documentation will be 
written.
 (type: FilePath
) |