Function walk_function_definition

pub fn walk_function_definition<'hir, V>(
    v: &mut V,
    base: &'hir Item<'hir>,
    name: &'hir PathDef,
    params: &'hir [Param<'hir>],
    ret_ty: &'hir Type<'hir>,
    body: Option<&'hir [Statement<'hir>]>,
) -> V::Result
where
    V: Visitor<'hir> + ?Sized,