/** @return Not null, read only and of type <tt>MetaProperty</tt>. */ public Collection getMetaPropertiesHiddenCalculated() throws XavaException { if (metaPropertiesHiddenCalculated == null) { metaPropertiesHiddenCalculated = new ArrayList(); Iterator it = getMetaPropertiesHidden().iterator(); while (it.hasNext()) { MetaProperty metaProperty = (MetaProperty) it.next(); if (metaProperty.isCalculated()) { metaPropertiesHiddenCalculated.add(metaProperty); } } } return metaPropertiesHiddenCalculated; }