public Bytes getStackItem(final int offset) {
    return stack.get(offset);
  }
Returns the item at the specified offset in the stack.

@param offset The item's position relative to the top of the stack
@return The item at the specified offset in the stack
@throws UnderflowException if the offset is out of range
evm/src/main/java/org/hyperledger/besu/evm/frame/MessageFrame.java