Builder(BuilderParams buildParams){
  this.buildParams=buildParams;
  this.targetCertConstraints=(X509CertSelector)buildParams.targetCertConstraints();
}

Builder ( BuilderParams buildParams ) { this . buildParams = buildParams ; this . targetCertConstraints = ( X509CertSelector ) buildParams . targetCertConstraints ( ) ; }
initialize the builder with the input parameters .
