JIRA: https://jira.spring.io/browse/INT-3727 Add a configuration option such that the `FileSplitter` can emit Start/End messages when splitting. Polishing according PR comments Add toString to FileMarker
JIRA: https://jira.spring.io/browse/INT-3727 Add a configuration option such that the `FileSplitter` can emit Start/End messages when splitting. Polishing according PR comments Add toString to FileMarker