If icon_name is null, the tooltip will not have an icon.
If title is null, the indicator will not have a tooltip. If description is
null, the tooltip will not have a description.
Sets the tooltip_icon_name, tooltip_title and tooltip_description properties.
| this |
The Indicator |
| icon_name |
The name of the tooltip's themed icon |
| title |
The tooltip's title |
| description |
The tooltip's detailed description |