a11y = import "a11y"
C = a11y.C

print! a11y.public
# print! a11y.private # error: private variable
print! a11y.C.x
c = a11y.C.new {.x = 0}
print! c.x

id c: C = c
print! id(c) == c

consts = import "consts"
print! consts.physics.G