code: private void certificateFileSanityChecks(File certFile) {
  
      if (!certFile.exists())
        throw new VOMSError("Local VOMS trusted certificate does not exist:"
          + certFile.getAbsolutePath());
  
      if (!certFile.canRead())
        throw new VOMSError("Local VOMS trusted certificate is not readable:"
          + certFile.getAbsolutePath());
  
    }
docs: Performs basic sanity checks performed on a file supposed to hold a VOMS AA
  certificate.
  
  @param certFile