NativeLsl_pull_sample_l typedef
        NativeLsl_pull_sample_l =
     Double Function(lsl_inlet in$, Pointer<Int64>  buffer, Int32 buffer_elements, Double timeout, Pointer<Int32>  ec)
    
    
    
Implementation
typedef NativeLsl_pull_sample_l =
    ffi.Double Function(
      lsl_inlet in$,
      ffi.Pointer<ffi.Int64> buffer,
      ffi.Int32 buffer_elements,
      ffi.Double timeout,
      ffi.Pointer<ffi.Int32> ec,
    );