public NamedParameterJdbcTemplate buildJdbcTemplate() {
        return FunctionUtils.doUnchecked(() -> new NamedParameterJdbcTemplate(buildDataSource()));
    }
Build jdbc template.

@return the named parameter jdbc template
support/cas-server-support-heimdall/src/main/java/org/apereo/cas/heimdall/authorizer/resource/policy/JdbcAuthorizationPolicy.java