@param node the node for which the attributes are applied
@param tagName the HTML tag name that these attributes are for (e.g. {@code h1}, {@code pre}, {@code code}).
@param attributes the attributes that were calculated by the renderer
@return the extended attributes with added/updated/removed entries
Let extensions modify the HTML tag attributes.
@param node the node for which the attributes are applied @param tagName the HTML tag name that these attributes are for (e.g. {@code h1}, {@code pre}, {@code code}). @param attributes the attributes that were calculated by the renderer @return the extended attributes with added/updated/removed entries