public void setVerifiableProperties(VerifiableProperties verifiableProperties) {
    this.verifiableProperties = verifiableProperties;
  }
Changes the {@link VerifiableProperties} instance with this instance so that the behaviour can be changed on the
fly.
@param verifiableProperties the{@link VerifiableProperties} that will dictate behaviour.
ambry-api/src/test/java/com/github/ambry/rest/MockRestRequestService.java