update
Finds the existing decorator on the target by its action value and merges the provided properties into it. Only non-null properties in decorator overwrite existing values.
Note: If the resulting decorator ends up with neither a label nor an icon, it will still be updated in the model but will not be visible in the UI.
Parameters
path
Slash-separated path identifying a field, row, or column.
action
The action value identifying the decorator to update.
decorator
A decorator whose non-null properties will be merged into the existing one.