func serializeByFlatBuffers(builder *flatbuffers.Builder, cg *ColorGroup) []byte {
builder.Reset()
//prepare data
name := builder.CreateString(cg.Name)
//prepare colors array
colorsLen := len(cg.Colors)
offsets := make([]flatbuffers.UOffsetT, colorsLen)
for i := colorsLen - 1; i >= 0; i-- {
offsets[i] = builder.CreateString(cg.Colors[i])
}
FlatBufferColorGroupStartColorsVector(builder, colorsLen)
for i := colorsLen - 1; i >= 0; i-- {
builder.PrependUOffsetT(offsets[i])
}
offset := builder.EndVector(colorsLen)
FlatBufferColorGroupStart(builder)
FlatBufferColorGroupAddCgId(builder, int32(cg.Id))
FlatBufferColorGroupAddName(builder, name)
FlatBufferColorGroupAddColors(builder, offset)
builder.Finish(FlatBufferColorGroupEnd(builder))
return builder.Bytes[builder.Head():]
}