code: def register_vissl_heads(register: FlashRegistry):
      for ssl_head in (swav_head, simclr_head, barlow_twins_head):
          register(ssl_head)
  
file_path: lightning-flash/src/flash/image/embedding/heads/vissl_heads.py
imports: from typing import List, Union
  import torch.nn
  from torch import Tensor
  from flash.core.registry import FlashRegistry
  from flash.core.utilities.imports import _VISSL_AVAILABLE
label_desc: Use image node_id 4 for calling a global function with example usage: register_vissl_heads(register) without return types