public Collection<CssProperty> getCssProperties() {
        final long stamp = lock.readLock();
        try {
            return Collections.unmodifiableSet(cssProperties);
        } finally {
            lock.unlockRead(stamp);
        }
    }
public Collection<CssProperty> getCssProperties() {
        final long stamp = lock.readLock();
        try {
            return Collections.unmodifiableSet(cssProperties);
        } finally {
            lock.unlockRead(stamp);
        }
    }
public Collection < CssProperty > getCssProperties ( ) { final long stamp = lock . readLock ( ) ; try { return Collections . unmodifiableSet ( cssProperties ) ; } finally { lock . unlockRead ( stamp ) ; } }
gets the {@code Collection<CssProperty>}. It's unmodifiable set since
3.0.1.

@return {@code Collection<CssProperty>}
@since 1.0.0
@author WFF
gets the { @code Collection<CssProperty > } . It s unmodifiable set since 3 . 0 . 1 .