code: def contains(self, points):
          
          if not self.is_watertight:
              log.warning('Mesh is non- watertight for contained point query!')
          contains = self.ray.contains_points(points)
          return contains
docs: Given a set of points, determine whether or not they are inside the mesh.
          This raises an error if called on a non- watertight mesh.
  
          Parameters
          ---------
          points : (n, 3) float
            Points in cartesian space
  
          Returns
          ---------
          contains : (n, ) bool
            Whether or not each point is inside the mesh