code: def resolve(self, file_path, follow_symlinks=True, allow_fd=False):
          
          if isinstance(file_path, int):
              if allow_fd and sys.version_info >= (3, 3):
                  return self.get_open_file(file_path).get_object()
              raise TypeError('path should be string, bytes or '
                              'os.PathLike (if supported), not int')
  
          if follow_symlinks:
              file_path = make_string_path(file_path)
              return self.get_object_from_normpath(self.resolve_path(file_path))
          return self.lresolve(file_path)
docs: Search for the specified filesystem object, resolving all links.
  
          Args:
              file_path: Specifies the target FakeFile object to retrieve.
              follow_symlinks: If `False`, the link itself is resolved,
                  otherwise the object linked to.
              allow_fd: If `True`, `file_path` may be an open file descriptor
  
          Returns:
            The FakeFile object corresponding to `file_path`.
  
          Raises:
              IOError: if the object is not found.