|   | 
Returns a list of existing style names.
| Number | Type | Compulsory | Default | Description | 
|---|---|---|---|---|
| 1 | string array | No | 
 | Optional arguments | 
If set, each element can provide an optional argument. Options are:
| Argument | Description | 
|---|---|
| global | Returns only global styles. | 
| NotProperty | Returns only styles that are not property styles. | 
| Property | Returns only styles that are property styles. | 
Return type: string array
List of in use style names.
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