macro_rules! dispatch_cdc_split_inner {
($dbz_split:expr, $as_type:tt, {$({$cdc_source_type:tt, $cdc_source_split:tt}),*}, $body:expr) => { ... };
}
macro_rules! dispatch_cdc_split_inner {
($dbz_split:expr, $as_type:tt, {$({$cdc_source_type:tt, $cdc_source_split:tt}),*}, $body:expr) => { ... };
}