code: def test_reducelronplateau_threshold_mode(self):
      self._test_reducelronplateau(
          100, {"threshold_mode": "abs"}, 1e-6, 1e-6
      )
  
imports: import numpy
  import torch
  import unittest
  from tinygrad.tensor import Tensor
  from tinygrad.nn.state import get_parameters
  from tinygrad.nn.optim import Adam
  from extra.lr_scheduler import MultiStepLR, ReduceLROnPlateau, CosineAnnealingLR, OneCycleLR
  from extra.training import train, evaluate
  from extra.datasets import fetch_mnist
label_desc: Use image node_id 13 for calling the TestLrScheduler obj's underlying member method code with example usage: obj.test_reducelronplateau_threshold_mode() without return types