@Override
    public boolean shouldYieldFocus( JComponent input ) {
        boolean shouldYieldFocus = super.shouldYieldFocus( input );
        if ( !shouldYieldFocus ) {
            warn();
        }
        return shouldYieldFocus;
    }
Overridden to beep when the user tries to click out of the edited field when invalid
Ghidra/Features/VersionTracking/src/main/java/ghidra/feature/vt/gui/filters/BoundedRangeInputVerifier.java