OrdinalAxisSpec constructor
      const
      OrdinalAxisSpec({ 
    
- RenderSpec<String> ? renderSpec,
- OrdinalTickProviderSpec? tickProviderSpec,
- OrdinalTickFormatterSpec? tickFormatterSpec,
- bool? showAxisLine,
- OrdinalScaleSpec? scaleSpec,
- OrdinalViewport? viewport,
Creates a AxisSpec that specialized for ordinal domain charts.
renderSpec spec used to configure how the ticks and labels
    actually render. Possible values are GridlineRendererSpec,
    SmallTickRendererSpec & NoneRenderSpec. Make sure that the 
Implementation
const OrdinalAxisSpec({
  RenderSpec<String>? renderSpec,
  OrdinalTickProviderSpec? tickProviderSpec,
  OrdinalTickFormatterSpec? tickFormatterSpec,
  bool? showAxisLine,
  OrdinalScaleSpec? scaleSpec,
  this.viewport,
}) : super(
        renderSpec: renderSpec,
        tickProviderSpec: tickProviderSpec,
        tickFormatterSpec: tickFormatterSpec,
        showAxisLine: showAxisLine,
        scaleSpec: scaleSpec,
      );