if args.contains(&PostgresTypeAttribute::PgBinaryProtocol) {
        // At this time, the `PostgresTypeAttribute` does not impact the way we generate
        // the `recv` and `send` functions.
        stream.extend(quote! {
            #[doc(hidden)]
            #[::pgrx::pgrx_macros::pg_extern(immutable, strict, parallel_safe)]
            pub fn #funcname_recv #generics(
                internal: ::pgrx::datum::Internal,
            ) -> #name #generics {
                let buf = unsafe { internal.get_mut::<::pgrx::pg_sys::StringInfoData>().unwrap() };

                let mut serialized = ::pgrx::StringInfo::new();

                serialized.push_bytes(&[0u8; ::pgrx::pg_sys::VARHDRSZ]); // reserve space for the header
                serialized.push_bytes(unsafe {
                    core::slice::from_raw_parts(
                        buf.data as *const u8,
                        buf.len as usize
                    )
                });

                let size = serialized.len();
                let varlena = serialized.into_char_ptr();

                unsafe{
                    ::pgrx::set_varsize_4b(varlena as *mut ::pgrx::pg_sys::varlena, size as i32);
                    buf.cursor = buf.len;
                    ::pgrx::datum::cbor_decode(varlena as *mut ::pgrx::pg_sys::varlena)
                }
            }
            #[doc(hidden)]
            #[::pgrx::pgrx_macros::pg_extern(immutable, strict, parallel_safe)]
            pub fn #funcname_send #generics(input: #name #generics) -> Vec<u8> {
                use ::pgrx::datum::{FromDatum, IntoDatum};
                let Some(datum): Option<::pgrx::pg_sys::Datum> = input.into_datum() else {
                    ::pgrx::error!("Datum of type `{}` is unexpectedly NULL.", stringify!(#name));
                };
                unsafe {
                    let Some(serialized): Option<Vec<u8>> = FromDatum::from_datum(datum, false) else {
                        ::pgrx::error!("Failed to CBOR-serialize Datum to type `{}`.", stringify!(#name));
                    };
                    serialized
                }
            }
        });