How to figure out what kind of properties would a target recognise when doing target:add or target:set?

[corpserot]

-- in a on_load() for example
target:set("???", "hello")
target:add("???", "world")

how would i figure out what "???" is useful to set/add?

edit: thank you!

[star-hengxing]

xmake show -l apis

[waruqi]

add_xxx/set_xxx -> target:add/set("xxx", ...)