code: def save_gguf(self, gguf_writer):
      # self.n_vocab not saved
      gguf_writer.add_embedding_length(self.n_embd)
      gguf_writer.add_head_count(self.n_head)
      gguf_writer.add_block_count(self.n_layer)
      gguf_writer.add_rope_dimension_count(self.n_rot)
      gguf_writer.add_feed_forward_length(self.get_n_ff())
  
imports: import argparse
  import gguf
  import struct
  import numpy
  from pathlib import Path
label_desc: Use image node_id 4 for calling the ModelParams obj's underlying member method code with example usage: obj.save_gguf(gguf_writer) without return types