add isSpecifyColumnRequired prototype comment
add isSpecifyColumnRequired prototype comment
dbflute-example/dbflute-example-on-springboot,dbflute-example/dbflute-example-on-springboot,dbflute-example/dbflute-example-on-springboot,dbflute-example/dbflute-example-on-springboot,dbflute-example/dbflute-example-on-springboot,dbflute-example/dbflute-example-on-springboot