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) |