}//GEN-LAST:event_downBtnActionPerformed
private void autoFillBtnActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_autoFillBtnActionPerformed
Context context = core.getResultContext();
ItemSelectorEditable<QueryResultColumn> cols = core.getColumns();
ContextGroup groupContext = MathExpressionEntityMethodRef
.getContextGroup(core.getContextGroup());
List<QEntity> options = context.getEntities(groupContext);
for (QEntity entity : options) {
for(QEntityProperty prop: context.getProperties(MathExpressionEntityMethodRef.GROUP, entity)) {
boolean alreadyContains = false;