old_contents: class Body(object):
  	def __init__(self, world):
  		pass
  	def setMass(self, mass):
  		pass
  	def setPosition(self, *args, **kwargs):
  		pass
  	def setQuaternion(self, *args, **kwargs):
  		pass
  	def setLinearVel(self, *args, **kwargs):
  		pass
  	def setAngularVel(self, *args, **kwargs):
  		pass
  
  
  class Mass(object):
  	def __init__(self):
  		pass
  	def setCylinderTotal(self, *args, **kwargs):
  		pass
  
  
  class World(object):
      pass
  
new_contents: class Body(object):
      def __init__(self, world):
          pass
      def setMass(self, mass):
          pass
      def setPosition(self, *args, **kwargs):
          pass
      def setQuaternion(self, *args, **kwargs):
          pass
      def setLinearVel(self, *args, **kwargs):
          pass
      def setAngularVel(self, *args, **kwargs):
          pass
  
  
  class Mass(object):
      def __init__(self):
          pass
      def setCylinderTotal(self, *args, **kwargs):
          pass
  
  
  class World(object):
      pass
  
subject: fix indentation in fake_ode.py