code: def install(user=False, symlink=False, **kwargs):
      """Install the pythreejs nbextension.
  
      Parameters
      ----------
      user: bool
          Install for current user instead of system-wide.
      symlink: bool
          Symlink instead of copy (for development).
      **kwargs: keyword arguments
          Other keyword arguments passed to the install_nbextension command
      """
      directory = join(dirname(abspath(__file__)), "nbextension")
      install_nbextension(
          directory,
          destination="pythreejs",
          symlink=symlink,
          user=user,
          **kwargs,
      )
  
label_desc: Use image node_id 1 for calling a global function with example usage: install(user, symlink) without return types