parameters: (cls)
docstring: Clear the cache of filesystem instances.
  
          Notes
          -----
          Unless overridden by setting the ``cachable`` class attribute to False,
          the filesystem class stores a reference to newly created instances. This
          prevents Python's normal rules around garbage collection from working,
          since the instances refcount will not drop to zero until
          ``clear_instance_cache`` is called.
docstring_summary: Clear the cache of filesystem instances.
docstring_tokens: Clear the cache of filesystem instances .
function: def clear_instance_cache(cls):
          """
          Clear the cache of filesystem instances.
  
          Notes
          -----
          Unless overridden by setting the ``cachable`` class attribute to False,
          the filesystem class stores a reference to newly created instances. This
          prevents Python's normal rules around garbage collection from working,
          since the instances refcount will not drop to zero until
          ``clear_instance_cache`` is called.
          """
          cls._cache.clear()
function_tokens: def clear_instance_cache ( cls ) : cls . _cache . clear ( )