DartLsl_pull_chunk_l typedef
        DartLsl_pull_chunk_l =
     int Function(lsl_inlet in$, Pointer<Int64>  data_buffer, Pointer<Double>  timestamp_buffer, int data_buffer_elements, int timestamp_buffer_elements, double timeout, Pointer<Int32>  ec)
    
    
    
Implementation
typedef DartLsl_pull_chunk_l =
    int Function(
      lsl_inlet in$,
      ffi.Pointer<ffi.Int64> data_buffer,
      ffi.Pointer<ffi.Double> timestamp_buffer,
      int data_buffer_elements,
      int timestamp_buffer_elements,
      double timeout,
      ffi.Pointer<ffi.Int32> ec,
    );