code: def gen_begin_empty(self):
      self.end_beam_search()
      self.sequence = None
      self.sequence_actual = None
      self.cache.current_seq_len = 0
  
imports: import cuda_ext
  from model import ExLlama, ExLlamaCache
  from lora import ExLlamaLora
  import torch
  import torch.nn.functional
label_desc: Use image node_id 9 for calling the ExLlamaGenerator obj's underlying member method code with example usage: obj.gen_begin_empty() without return types