The placeholder or placer instruction is the "_" (underline) instruction which defines where the function code must be inline in the modifier.
from glider import *
def query():
modifierlist = (
Modifiers()
.with_name_prefix("lock")
.exec(3)
)
results = []
for modd in modifierlist:
for placers in modd.placer_instructions().exec():
results.append(placers)
return results