Can you search the API-DOC for this procedure? Use the search box on the right hand side and see if there are any results. You'll have to have the implementation installed for the proc to be created.
It should return a private result so you'll need to click "Show" to see the private procedures.
There should be a tcl procedure called
AcsSc.ftscontentprovider.datasource.etp_page_revision
Make sure you restart aolserver after you install the service contract binding, the tcl procedures for the bindings are created on startup.
