docstr: Returns a list of the supported start methods, default first.
docstr_tok: ["Returns","a","list","of","the","supported","start","methods",",","default","first","."]
code: def get_all_start_methods(self):
      """Returns a list of the supported start methods, default first."""
      if sys.platform == "win32":
          return ["spawn"]
      else:
          methods = (
              ["spawn", "fork"]
              if sys.platform == "darwin"
              else ["fork", "spawn"]
          )
          if reduction.HAVE_SEND_HANDLE:
              methods.append("forkserver")
          return methods
  
imports: import os
  import sys
  import threading
  from .None import process
  from .None import reduction
label_desc: Use image node_id 5 for calling the DefaultContext obj's underlying member method code with example usage: obj.get_all_start_methods() and returns: list, methods