String getBaseName(Meta meta) {
        final String feedPath = fileSystemFeedPaths.getOrCreatePath(meta.getFeedName());
        return feedPath +
               FILE_SEPARATOR_CHAR +
               FsPrefixUtil.padId(meta.getId());
    }
<p>
Build a file base name.
</p>
<p>
<p>
[feedid]_[streamid]
</p>
stroom-data/stroom-data-store-impl-fs/src/main/java/stroom/data/store/impl/fs/FsPathHelper.java