This question requires you to use the following specification for processing a string that computes the total number of A's in the string. Note the string may contain any character. You are required to use the following specification when computing the total number of A's in a string. [40] private void incrTotalAs() - increments the total number of A's public int getTotalAs() - returns the total of A's public void processString(String) - passes in a string and processes it You may only use the following operations associated with the String type-charAt(int) and length() State any assumptions you make when answering this question. (a) Draw a state machine using the specification above to process the string. Use StarUML to draw your state machine (statechart), copy and paste the state machine into this document. You are required to submit the StarUML file with the state machine along with the answer sheet in a zipped file.