docs: def to_jacobian(self):
          """
          Converts this point to a Jacobian representation.
  
          Returns:
              JacobianPoint: The Jacobian representation.
          """
          if not self:
              return JacobianPoint(X=0, Y=0, Z=0)
          return JacobianPoint(X=self.X, Y=self.Y, Z=1)