public static String block(Stream<String> rows) {
        return block(rows.collect(joining(nl())));
    }
Indents the specified text, surrounds it with brackets and put the
content on a separate line.

@param rows  the rest of the rows.
@return      the text with a '{\n' before and a '\n}' afterwards.
common-parent/codegen/src/main/java/com/speedment/common/codegen/util/Formatting.java