class_docstr: Utility class to inject multiple implementations of methods.
  
  An implementation must implement __call__ and is_supported with the same
  set of arguments. The registered implementations "is_supported" methods are
  called in reverse order under which they are registered. The first to return
  true is then invoked via __call__ and the result returned.
docstr: Remove all implementations.
docstr_tok: ["Remove","all","implementations","."]
code: def clear_implementations(self):
      """Remove all implementations."""
      self._impls = []
  
label_desc: Use image node_id 2 for calling the MultiImplRegister obj's underlying member method code with example usage: obj.clear_implementations() without return types