private void updateFilterButton(boolean showFilter) {

		// Note: this must be run on the Swing thread.  When the filter button shows itself,
		//       it requires an AWT lock.  If called from a non-Swing thread, deadlocks!
		SystemUtilities.runIfSwingOrPostSwingLater(() -> {
			if (showFilter) {
				clearLabel.showFilterButton();
			}
			else {
				clearLabel.hideFilterButton();
			}
		});

	}
Returns the accessible name prefix set by a previous call to 
{@link #setAccessibleNamePrefix(String)}.  This will be null if not set.
@return the prefix
Ghidra/Framework/Docking/src/main/java/docking/widgets/filter/FilterTextField.java