code: def __init__(self, n_ff=None):
      self.model = LoraModel(n_ff=n_ff)
      self.opt_ctx = OptimizationContext()
  
imports: import argparse
  import gguf
  import struct
  import numpy
  from pathlib import Path
label_desc: Use image node_id 1 to create a new LoraCheckpoint object  with example: obj = LoraCheckpoint(n_ff)