[Rivet] template from rivet-mkanalysis does not compile

[Jochen Klein]

Hi,

with Rivet 2.5.1 the template analysis produced by rivet-mkanalysis
does not compile because of the lack of bookCounter using the IDs for
referencing HepData:
_h_ZZZZ = bookCounter(3, 1, 1);

Looking at the documentation, this signature indeed does not seem to
exist. Are we overlooking something or is this a problem with the
generated template?

Cheers and thanks,
   Jochen