#1569 DTO pattern implementation using Enums (#1570)

* #1569 DTO pattern implemented using Enums

* #1569 DTO pattern implemented using Enums

* #1569 adding some java docs

* #1569 some changes in java doc and code style

* #1569 some changes in java doc and code style

* #1569 some changes in java doc and code style

* #1569 some changes in java doc and code style

* #1569 adding suggested extra line

* #1569 license added to pom.xml

* #1569 more checkstyle problems resolved

* #1569 more checkstyle problems resolved

* #1569 more checkstyle problems resolved

Co-authored-by: siavashsoleymani <siavash.soleimani@snapp.cab>
Co-authored-by: Subhrodip Mohanta <subhrodipmohanta@gmail.com>

pom.xml

@@ -199,6 +199,7 @@
         <module>filterer</module>
         <module>factory</module>
         <module>separated-interface</module>
+        <module>data-transfer-object-enum-impl</module>
     </modules>
 
     <repositories>