code: def mixin_prefetch_parser(parser=None):
      """Add the options for prefetching
      :param parser: the parser
      """
      gp = add_arg_group(parser, title="Prefetch")
  
      gp.add_argument(
          "--prefetch",
          type=int,
          default=1000,
          help="""
      Number of requests fetched from the client before feeding into the first Executor. 
      
      Used to control the speed of data input into a Flow. 0 disables prefetch (1000 requests is the default)""",
      )
  
file_path: jina/jina/parsers/orchestrate/runtimes/remote.py
imports: from jina.constants import __default_host__
  from jina.parsers.helper import CastHostAction, KVAppendAction, add_arg_group
  from jina.parsers.orchestrate.runtimes.grpc_channel import mixin_grpc_channel_options_parser
  from jina.parsers.orchestrate.runtimes.runtime import mixin_base_runtime_parser
label_desc: Use image node_id 10 for calling a global function with example usage: mixin_prefetch_parser(parser) without return types