Does Finalize on a Field have optional fields
 

The documentation for the Finalize element of Field indicated that a Phase and Priority are required attributes. The example code has no attributes, and looking around the files I have on-hand, I don't have an example of Finalize with attributes (unfortunately, I'm not near my desktop, where I have more source code from third-parties). It seems evident that Finalize has no required attributes, but does it use the listed attributes of phase, priority, name, and isprimary, or are those accidentally copied from bound or calculate?

Those look like copy-paste errors.