Function registerRichData

registerRichData(type: string, entry: CellContentEntry): () => void
Registers what a type of rich data value contributes to the UI, used when the cell's control does not draw the value. Replaces the built-in entry (image).
Parameters
- type: string
  The rich data type (IRichData.getKind().getName()), as registered with RichDataRegistry in the SDK.
- entry: CellContentEntry
Returns () => void
A function that removes the registration.