How to invoke Module#constants on Module itself

constants.rb

X = 1

# Module.constants returns constants accessible at the place where the
# method is called.
p Module.constants.include?(:X) #=> true

# Module#constants returns constants defined in the receiver.  However,
# you need a trick to invoke Module#constants on Module itself.
p Module.instance_method(:constants).bind(Module).call #=> []

p Module.instance_method(:constants).bind(Object).call.include?(:X) #=> true