Function pin_new_unchecked_in_helper 

#[doc(hidden)]
pub const unsafe fn pin_new_unchecked_in_helper<'a, T>(
    pinned: &'a mut PinMacroHelper<T>,
) -> Pin<&'a mut T>

🔬This is a nightly-only experimental API. (pin_macro_internals)

Helper for pin! to enforce its type signature. See https://github.com/rust-lang/rust/issues/153438.

Safety

Calling this function has the same safety requirements as calling Pin::new_unchecked on &mut pinned.value