new: [legacy] handler added for Legacy APIs
new: [legacy] handler added for Legacy APIs

- allows for a remap of the parameters and subsequent calls to modern functions

FIRSTdotorg/MISP,SteveClement/MISP,MISP/MISP,FIRSTdotorg/MISP,SteveClement/MISP,SteveClement/MISP,FIRSTdotorg/MISP,MISP/MISP,MISP/MISP,MISP/MISP,SteveClement/MISP,MISP/MISP,SteveClement/MISP,FIRSTdotorg/MISP