private String dec2bin(final int dec) {
    String bin = Integer.toBinaryString(dec);
    String padding = new String(new char[32 - bin.length()]).replace("\0", "0");
    return padding + bin;
  }
Create a corpus

@param dirs The directory to store the corpus files
testfuzz/src/main/java/org/hyperledger/besu/testfuzz/javafuzz/Corpus.java