pub fn open_drop(
identity: &PrivateIdentity,
env: &DropEnvelope,
manifest: &Manifest,
chunks: &[Vec<u8>],
) -> Result<Vec<u8>>pub fn open_drop(
identity: &PrivateIdentity,
env: &DropEnvelope,
manifest: &Manifest,
chunks: &[Vec<u8>],
) -> Result<Vec<u8>>