# File lib/chef/solr/application/solr.rb, line 216
        def assert_valid_schema!
          unless valid_schema_name? && valid_schema_version?
            Chef::Log.fatal "Your Chef Solr installation needs to be upgraded."
            Chef::Log.fatal "Expected schema version #{Chef::Solr::SCHEMA_VERSION} but version #{solr_schema_version} is installed."
            Chef::Log.fatal "Use chef-solr-installer to upgrade your Solr install after backing up your data."
            exit 1
          end
        end