I'm hoping this plan later when flowering–fruiting may identify to Solanum campanulatum – https://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Solanum~campanulatum rather than an alien Solanum weed species .
For example watch out for alien weed species Solanum viarum 'tropical soda apple' : https://weeds.dpi.nsw.gov.au/Weeds/TropicalSodaApple .