pub(crate) fn insert_merger_to_union_with_project(
node: &mut StreamNode,
project_node: &PbNodeBody,
uniq_identity: Option<&str>,
)
pub(crate) fn insert_merger_to_union_with_project(
node: &mut StreamNode,
project_node: &PbNodeBody,
uniq_identity: Option<&str>,
)