docs: Update mute-idiom/README.md with explanation (#2716)

mute-idiom/README.md

@@ -3,22 +3,93 @@ title: Mute Idiom
 category: Idiom
 language: en
 tag:
- - Decoupling
+- Decoupling
 ---
 
+
 ## Intent
 Provide a template to suppress any exceptions that either are declared but cannot occur or should only be logged;
 while executing some business logic. The template removes the need to write repeated `try-catch` blocks.
 
+
+## Explanation
+Real World Example
+> The vending machine contained in your office displays a warning when making a transaction. The issue occurs when the
+> customer decides to pay with physical money that is not recognized by the system. However, you and everyone in the office
+> only pays with the company credit card and will never encounter this issue.
+
+In plain words
+> The Mute Idiom design pattern is used to reduce the requirement of catching exceptions when they cannot be thrown or
+> should be ignored when thrown. This applies in cases such as API functions, where the underlying code cannot be changed
+> to include individual use cases.    
+
+Programmatic Example
+
+Converting the real-world example into a programmatic representation, we represent an API function as the 
+office Vending machine
+
+```java
+
+public class VendingMachine {
+   public void purchaseItem(int itemID, PaymentMethod paymentMethod) throws Exception {
+       if (paymentMethod == PaymentMethod.Cash) {
+           throw new Exception();
+       }
+       else {
+           System.out.println("Here is your item");
+       }
+   }
+}
+```
+
+```java
+public enum PaymentMethod {
+   Card,Cash
+}
+```
+
+We then run our office's daily routine, which involves purchasing items 
+from the vending machine with the company card, using the mute pattern to ignore the exceptions that can't be thrown
+```java
+package com.iluwatar.mute;
+
+public class Office {
+    private PaymentMethod companyCard = PaymentMethod.Card;
+    private VendingMachine officeVendingMachine = new VendingMachine();
+
+    public static void main(String[] args) {
+        Office office = new Office();
+        office.dailyRoutine();
+
+    }
+    public void dailyRoutine() {
+        Mute.mute(() -> {
+            officeVendingMachine.purchaseItem(1,companyCard);
+            officeVendingMachine.purchaseItem(1,companyCard);
+            officeVendingMachine.purchaseItem(1,companyCard);
+        });
+    }
+}
+
+```
+
+
 ## Class diagram
 ![alt text](./etc/mute-idiom.png "Mute Idiom")
 
+
 ## Applicability
 Use this idiom when
-
 * an API declares some exception but can never throw that exception eg. ByteArrayOutputStream bulk write method.
 * you need to suppress some exception just by logging it, such as closing a resource.
 
+
+
+
 ## Credits
 
+
 * [JOOQ: Mute Design Pattern](http://blog.jooq.org/2016/02/18/the-mute-design-pattern/)
+
+
+