In order to build original portlet do the following
- connect to vpn
- wget http://mirrors/files.liferay.com/private/ee/portal/6.2.10.21/liferay-portal-tomcat-6.2-ee-sp20-20170717160924965.zip
- unzip liferay-portal-tomcat-6.2-ee-sp20-20170717160924965.zip
- cd liferay-plugins-sdk-6.2-ee-sp20/portlets/evp-portlet
- ant war