public static Set<String> getUIKeySpecialPrefixes() {
		if( uiKeySpecialPrefixes == null ) {
			uiKeySpecialPrefixes = new HashSet<>();
			uiKeySpecialPrefixes.add( "[style]" );
		}
		return uiKeySpecialPrefixes;
	}
Returns set of special UI key prefixes, used in FlatLaf properties files.
Unlike other prefixes, properties with special prefixes are preserved.
You can access them using `UIManager`. E.g. `UIManager.get( "[someSpecialPrefix]someKey" )`.
<p>
By default, the set contains following special prefixes:
<ul>
  <li>{@code [style]}
</ul>
<p>
You can add own prefixes to the set.
The prefixes must start with '[' and end with ']' characters, otherwise they will be ignored.

@since 3.6
flatlaf-core/src/main/java/com/formdev/flatlaf/FlatLaf.java