public VcfRecord padFormatAndSample(String key){
  if (mFormatAndSample.containsKey(key)) {
    final ArrayList<String> list=mFormatAndSample.get(key);
    while (list.size() < mNumSamples) {
      list.add(MISSING);
    }
  }
  return this;
}

public VcfRecord padFormatAndSample ( String key ) { if ( mFormatAndSample . containsKey ( key ) ) { final ArrayList < String > list = mFormatAndSample . get ( key ) ; while ( list . size ( ) < mNumSamples ) { list . add ( MISSING ) ; } } return this ; }
fills any remaining values with " missing value " marker
