How does one save breakpoints using pry-byebug?

I’m using pry-byebug and when I try to save some breakpoints into a file (using the save command) I get this error:

[4] pry(#<RetrieveRcv>)> save                                                                                                                                                        │········
NameError: undefined local variable or method `save' for #<RetrieveRcv:0x007fdd9e0aab30>                                                                                             │········from (pry):1:in `initialize'

Does anyone know how to save breakpoint configs so you don’t have to set them up again and again?