static void copy(
      final byte[] src, final int srcPos, final byte[] dst, final int dstPos, final int length) {
    System.arraycopy(src, srcPos, dst, dstPos, Math.min(length, src.length - srcPos));
  }
Create a corpus

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