public Code getCode(final Hash codeHash, final Bytes codeBytes) {
    checkNotNull(codeHash);
    Code result = codeCache.getIfPresent(codeHash);
    if (result == null) {
      result = getCodeUncached(codeBytes);
      codeCache.put(codeHash, result);
    }
    return result;
  }
Gets code.

@param codeHash the code hash
@param codeBytes the code bytes
@return the code
evm/src/main/java/org/hyperledger/besu/evm/EVM.java