'Create the <schematic> XML element.
Although <schematic> can have several attributes,
(*height*, *width*, *parts*, *analyses*, *submit_analysis*, and *initial_value*),
none of them are used in the capa module.
For testing, we create a bare-bones version of <schematic>.'

def create_input_element(self, **kwargs):

    return etree.Element('schematic')
