class_docstr: Representation of an SSH connection.
      
class_docstr_tok: ["Representation","of","an","SSH","connection","."]
docstr: Opens the connection.
  
  Returns
  -------
  bool
    To return True if connection establishes a control socket successfully.
    Return False otherwise
code: def open(self):
      """Opens the connection.
  
      Returns
      -------
      bool
        To return True if connection establishes a control socket successfully.
        Return False otherwise
      """
  
      raise NotImplementedError
  
imports: import fasteners
  import os
  import logging
  from socket import gethostname
  from hashlib import md5
  from subprocess import Popen
  import tempfile
  import threading
  from datalad.utils import quote_cmdlinearg
  from datalad.support.exceptions import CapturedException, CommandError, ConnectionOpenFailedError
  from datalad.support.external_versions import external_versions
  from datalad.utils import auto_repr, Path, ensure_list, on_windows
  from datalad.cmd import NoCapture, StdOutErrCapture, WitlessRunner
  from ..None import cfg
label_desc: Use image node_id 3 for calling the BaseSSHConnection obj's underlying member method code with example usage: obj.open() without return types