public void set(final int offset, final T operand) {
    if (offset < 0) {
      throw new UnderflowException();
    } else if (offset >= size()) {
      throw new OverflowException();
    }

    entries[top - offset] = operand;
  }
Set operand.

@param offset the offset
@param operand the operand
evm/src/main/java/org/hyperledger/besu/evm/internal/FixedStack.java