fetch Locator
abstract suspend fun fetchLocator(charOffset: Int = 0, charLength: Int? = null): ColibrioResult<SimpleLocatorData>
Fetch a Locator for this ContentBlock.
Parameters
char Offset
The character offset within the block's text content where the Locator should start. Defaults to 0.
char Length
The number of characters to include. Defaults to end of textContent if omitted.