public VcfRecord peek(){
  if (mCurrent.size() == 0) {
    throw new IllegalStateException("No more records");
  }
  return mCurrent.peek();
}

public VcfRecord peek ( ) { if ( mCurrent . size ( ) == 0 ) { throw new IllegalStateException ( "No more records" ) ; } return mCurrent . peek ( ) ; }
get the current vcf record without advancing the reader
