NativeLsl_push_chunk_lt typedef
        NativeLsl_push_chunk_lt =
     Int32 Function(lsl_outlet out, Pointer<Int64>  data, UnsignedLong data_elements, Double timestamp)
    
    
    
Implementation
typedef NativeLsl_push_chunk_lt =
    ffi.Int32 Function(
      lsl_outlet out,
      ffi.Pointer<ffi.Int64> data,
      ffi.UnsignedLong data_elements,
      ffi.Double timestamp,
    );