code: def start_of_option(param_str):
      """
      :param param_str: param_str to check
      :return: whether or not this is the start of an option declaration
          (i.e. starts "-" or "--")
      """
      return param_str and param_str[:1] == "-"
  
imports: import copy
  import os
  import re
  from .core import Argument
  from .core import MultiCommand
  from .core import Option
  from .parser import split_arg_string
  from .types import Choice
  from .utils import echo
label_desc: Use image node_id 3 for calling a global function with example usage: start_of_option(param_str) and returns: unknown