for i in 0..inputs.len() {
      let mut out_data: Vec<&Option<Value>> = [].to_vec();
      let input = &inputs[i];
      let connections = &input["connections"].as_array().unwrap_or(&empty_arr);


      for i2 in 0..connections.len() {
        let c = &connections[i2];
        let nid = &c["node"].as_u64().expect("Invalid connection node ID") as &u64;
        let nn = &nodes.unwrap()[*nid as usize]; // TODO rename
        let out = self.back_process(&nn);
        let out_index = &c["output"]
          .as_u64()
          .expect("Invalid connection output index") as &u64;
        let val = &out[*out_index as usize];
        out_data.push(val);
      };
    }