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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def run_command( cls, cmd, # type: List[str] show_stdout=True, # type: bool cwd=None, # type: Optional[str] on_returncode='raise', # type: str extra_ok_returncodes=None, # type: Optional[Iterable[int]] command_desc=None, # type: Optional[str] extra_environ=None, # type: Optional[Mapping[str, Any]] spinner=None # type: Optional[SpinnerInterface] ):
 """ Run a VCS subcommand This is simply a wrapper around call_subprocess that adds the VCS command name, and checks that the VCS is available """

        cmd = [cls.name] + cmd
        try:
            return call_subprocess(cmd, show_stdout, cwd,
                                   on_returncode=on_returncode,
                                   extra_ok_returncodes=extra_ok_returncodes,
                                   command_desc=command_desc,
                                   extra_environ=extra_environ,
                                   unset_environ=cls.unset_environ,
                                   spinner=spinner)
        except OSError as e:
            # errno.ENOENT = no such file or directory
            # In other words, the VCS executable isn't available
            if e.errno == errno.ENOENT:
                raise BadCommand(
                    'Cannot find command %r - do you have '
                    '%r installed and in your '
                    'PATH?' % (cls.name, cls.name))
            else:
                raise