Make the AbstractMarkupBuilderInterface pure virtual.
Make the AbstractMarkupBuilderInterface pure virtual.

simonwagner/grantlee,simonwagner/grantlee,cutelyst/grantlee,cutelyst/grantlee,simonwagner/grantlee,simonwagner/grantlee,simonwagner/grantlee,simonwagner/grantlee,cutelyst/grantlee,cutelyst/grantlee,cutelyst/grantlee