The Pie Chart component renders as a circular chart that depicts data values as sections. When clicked, it produces a ChartClickEvent with data about what was clicked so the system can process the click as required.

It produces events of the following types:

InitEvent when the component is initialized or displayed if previously hidden
ChartClickEvent when the user clicks a chart

Pie chart with legend

The Pie Chart component has the following properties:

Title: pie chart main title
Subtitle: pie chart subtitle
Slices: pie chart sections (a list of slices displayed in the pie chart)

The slices define their label and value: the Slice value is defined as a decimal value and represents the mutual ratio of individual slices.
```
collect(
  getCurrentAssets(),
  {asset ->
    new ui::PieSlice(
      label -> asset.ISIN,
      value -> asset.currentAmount)
  }
)
```
Show legend: visibility of the chart legend (if true, the legend is visible)