@callback before_scrub(html :: String.t()) :: String.t()

@callback scrub(node_with_children()) :: node_with_children()

@callback scrub({token :: atom(), children :: list()}) :: tuple()

@callback scrub(text :: String.t()) :: String.t()

@callback scrub_attribute(tag :: String.t(), attribute :: String.t()) :: tuple() | nil

@callback scrub_attributes(tag :: String.t(), attributes :: Keyword.t()) :: Keyword.t()