code: private boolean requireSigningPolicyCheck(GSIConstants.CertificateType certType) {
  
          return !ProxyCertificateUtil.isProxy(certType) && certType != GSIConstants.CertificateType.CA;
      }
docs: if a certificate is not a CA or if it is not a proxy, return true.
  
  @param certType The type of Certificate being queried.
  @return True if the CertificateType requires a Signing Policy check.