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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 symlink(self, link_target, path, dir_fd=None):
 """Creates the specified symlink, pointed at the specified link target. Args: link_target: The target of the symlink. path: Path to the symlink to create. dir_fd: If not `None`, the file descriptor of a directory, with `link_target` being relative to this directory. New in Python 3.3. Raises: OSError: if the file already exists. """

        link_target = self._path_with_dir_fd(link_target, self.symlink, dir_fd)
        self.filesystem.create_symlink(
            path, link_target, create_missing_dirs=False)