ant download-selenium returns build fail error

[Ruth Hoffman]

According to the documentation, I should be able to download the 
necessary Selenium server.jar file as so:

ant download-selenium
This returns the following error:

Target "download-selenium" does not exist in the project "OFBiz Main Build".

for Release 9.04 version 899857

Is this a bug or is Selenium not supported in Release 9.04 version 899857?

Regards,
Ruth