in src/main/java/org/apache/sling/fsprovider/internal/mapper/FileResourceMapper.java [291:304]
private File getFile(final String path) {
if (path.equals(providerRoot)) {
return providerFile;
}
if (path.startsWith(providerRootPrefix)) {
String relPath = Escape.resourceToFileName(path.substring(providerRootPrefix.length()));
File file = new File(providerFile, relPath);
if ((contentFileExtensions == null || !contentFileExtensions.matchesSuffix(file))
&& fileStatCache.exists(file)) {
return file;
}
}
return null;
}