public FileFinder recursive() {
        branchFilter = Predicates.alwaysTrue();
        return this;
    }
Enables a recursive search that processes all sub directories recursively with a depth-first
search.

@return The current {@link FileFinder} to perform method chaining.
inlong-agent/agent-common/src/main/java/org/apache/inlong/agent/utils/file/FileFinder.java