code: def forward(self, t, state):
      return self.odefunc(state)
  
imports: import argparse
  import os
  import math
  import matplotlib.pyplot
  import torch
  import torch.nn
  from torchdiffeq import odeint, odeint_event
  from bouncing_ball import BouncingBallExample
label_desc: Use image node_id 2 for calling the NeuralODE obj's underlying member method code with example usage: obj.forward(t, state) and returns: self