Function cairo_lang_starknet::contract::get_selector_and_sierra_function

pub fn get_selector_and_sierra_function<T: SierraIdReplacer>(
    db: &dyn SierraGenGroup,
    function_with_body: ConcreteFunctionWithBodyId,
    replacer: &T
) -> (Felt252, FunctionId)

Converts a function to a Sierra function. Returns the selector and the sierra function id.