Function fuchsia_fs::directory::readdir_recursive_filtered

pub fn readdir_recursive_filtered<'a, ResultFn, RecurseFn>(
    dir: &'a DirectoryProxy,
    timeout: Option<Duration>,
    results_filter: ResultFn,
    recurse_filter: RecurseFn
) -> BoxStream<'a, Result<DirEntry, RecursiveEnumerateError>>
where
    ResultFn: Fn(&DirEntry, Option<&Vec<DirEntry>>) -> bool + Send + Sync + Copy + 'a,
    RecurseFn: Fn(&DirEntry) -> bool + Send + Sync + Copy + 'a,

Returns Stream of nodes in tree rooted at the given DirectoryProxy for which |results_filter| returns true plus any leaf (empty) directories. The results filter receives the directory entry for the node in question and if the node is a directory, a reference a Vec of the directory’s contents. The function recurses into sub-directories for which |recurse_filter| returns true. The returned entries will not include “.”. |timeout| can be provided optionally to specify the maximum time to wait for a directory to be read.