static CipherExecutor<Serializable, Serializable> noOp() {
        return NoOpCipherExecutor.INSTANCE;
    }
Factory method.

@return Strongly -typed Noop {@code CipherExecutor Serializable -> Serializable}
api/cas-server-core-api-util/src/main/java/org/apereo/cas/util/crypto/CipherExecutor.java