### Description

Only the following PVX methods are available on app_ruby:

:sbranch_set_ruri, :sbranch_append, :sbranch_reset, :pv_var_to_xavp, :pv_xavp_to_var, :pv_xavp_print, :xavp_params_explode, :xavp_params_implode, :evalx, :freeze

However pvx.xavp.get() etc are documented:

https://kamailio.org/docs/tutorials/devel/kamailio-kemi-framework/modules/#k...

#### Reproduction

`KSR.info(KSR::PVX.methods.to_s)`

### Additional Information

kamailio 5.3.0-dev4 (x86_64/linux) 6d43ea

Can be potentially worked around by using `:pv_xavp_to_var` and `KSR::PV.gete()`, however this feels a bit messy