code: def create_file(self, name, content, add=True, annex=False):
      filename = opj(self.path, name)
      with open(filename, "wb") as f:
          f.write(content.encode())
      if add:
          if annex:
              if isinstance(self.repo, AnnexRepo):
                  self.repo.add(name)
              else:
                  raise ValueError(
                      "Can't annex add to a non-annex repo."
                  )
          else:
              self.repo.add(name, git=True)
  
imports: import os
  import tempfile
  from abc import ABCMeta, abstractmethod
  from os.path import exists
  from os.path import join
  from datalad import cfg
  from datalad.customremotes.base import init_datalad_remote
  from ..None import __version__
  from ..support.annexrepo import AnnexRepo
  from ..support.external_versions import external_versions
  from ..support.gitrepo import GitRepo
  from ..support.network import get_local_file_url
  from ..utils import swallow_logs, swallow_outputs
  from .None import _TEMP_PATHS_GENERATED
  from .utils_pytest import get_tempfile_kwargs
label_desc: Use image node_id 4 for calling the TestRepo obj's underlying member method code with example usage: obj.create_file(name, content, add, annex) without return types