code: public void setProxy(Proxy proxy) {
          if (verifiers.removeIf(verifier -> verifier instanceof SkillRequestSignatureVerifier)) {
              verifiers.add(new SkillRequestSignatureVerifier(proxy));
          }
      }
docs: Sets a {@code Proxy} object that this servlet may use if Request Signature Verification is enabled.
  
  @param proxy the {@code Proxy} to associate with this servlet.