// bean_op -> EPSILON
private void beanOperation(VariableExpressionNode bean) {
// bean_op -> DOT property bean_op
if (lookahead.tokenType == TokenTypes.DOT) {
nextToken();
VariableExpressionNode property = new VariableExpressionNode(lookahead.sequence);
bean.setProperty(property);
nextToken();
beanOperation(property);
return;
}