public static OperationResult staticOperation(final MessageFrame frame, final int index) {
    frame.pushStackItem(frame.getStackItem(index - 1));

    return dupSuccess;
  }
Performs Dup operation.

@param frame the frame
@param index the index
@return the operation result
evm/src/main/java/org/hyperledger/besu/evm/operation/DupOperation.java