1. Consider stock management software that records all transactions that occurs for a portfolio. For Example, stock may be purchased and sold. Dividend payments may be received. Complex situation can occur, such as stock splits. The current contents of portfolio can be determined by replaying the transaction log. The portfolio has some initial contents, and all subsequent changes are captured via the transaction log. The charges in the transaction log are then applied through the target date to determine the current contents. Construct a procedural sequence diagram to show the calculation of the contents of a portfolio as of some date. Limit the detail in your diagram to four message flows