Function write_copc_stream 

pub fn write_copc_stream<S: BoundedSpatialRecordSource>(
    path: impl AsRef<Path>,
    source: &mut S,
    expected_points: u64,
    params: &CopcWriterParams,
    spool: &SpoolOptions,
) -> Result<CopcStreamingWriteReceipt, IoError>

Writes a bounded record source to COPC through the writer’s fixed-width temporary spill, preflighting the complete spill extent before any points are consumed.