Function rustfmt_nightly::closures::rewrite_closure

pub(crate) fn rewrite_closure(
    capture: CaptureBy, 
    is_async: &Async, 
    movability: Movability, 
    fn_decl: &FnDecl, 
    body: &Expr, 
    span: Span, 
    context: &RewriteContext<'_>, 
    shape: Shape
) -> Option<String>