private static long parseUnsignedLong(final String value) {
    String v = value.toLowerCase(Locale.US);
    if (v.startsWith("0x")) {
      v = v.substring(2);
    }
    return Long.parseUnsignedLong(v, 16);
  }
Writes the genesis block's world state to the given {@link MutableWorldState}.

@param target WorldView to write genesis state to
ethereum/core/src/main/java/org/hyperledger/besu/ethereum/chain/GenesisState.java