Attribute Macro node_handler 

#[node_handler]

Define a node handler without generating registry metadata.

use daedalus_macros::node_handler;

#[node_handler]
fn handler(
    _node: &daedalus_runtime::RuntimeNode,
    _ctx: &daedalus_runtime::state::ExecutionContext,
    _io: &mut daedalus_runtime::io::NodeIo,
) -> Result<(), daedalus_runtime::executor::NodeError> {
    Ok(())
}