* local variable type inference changes

replacing type with var

* the type changed back to String

since it is initializing to null and later having different value, it is throwing error in Travis-CI.  Made changes.

* iluwatar#1009 - remove child versions

* iluwatar#1009 - add custom jaxb version for cqrs

…rn (iluwatar#1033)

local variable type inference for service-layer design patterns

local variable type inference changes for design pattern service locator

local variable type inference changes for design pattern singleton

local variable infere changes for STATE design pattern

local variable type inference changes for step builder design pattern

local variable type inference changes for strategy design pattern

local variable type inference changes for template method design pattern

local variable type inference changes for throttling design pattern

* local variable type inference changes

local variable type inference changes for thread pool design pattern

* local variable type inference changes

local variable type inference changes for ThreadPool design pattern

* iluwatar#984 for unitofwork, tolerantreader, twin

* iluwatar#984 for unitofwork, tolerantreader, twin

* iluwatar#987 for visitor, value-object, unitofwork, typeobjectpattern, tolerantreader, twin, tranpoline

Add directory-maven-plugin to resolve the location of the
license-plugin-header-style.xml from a submodule directory

* init repo for role object

* add to init

*  add to init

*  add first impl

*  add pattern

*  add license

*  add changes

* Use java 11

* Use .of
- Replace Arrays.asList with List.of
- Replace HashSet<>(List.of()) with Set.of

* Formatting

…ern (iluwatar#1053)

* Using static object to reduce memory foot prints

* Updating README along with name of static fields

* Updating code as per review comments

* Updating code as per review comments

* Updating doc as per new code

…or patterns iluwatar#1021 (iluwatar#1054)

* fix checkstlye errors - visitor pattern

* fix checkstlye errors - strategy pattern

* fix checkstlye errors - singleton pattern

…watar#971)

*  Fix for Issue#iluwatar#549

Catch ClientProtocolException and Update Error Logs

* Fix indentation, checkstyle errors

* Fix for Issue iluwatar#549
Add fallbacks in Aggregator service when other microservices fail

* Make ProductInventoryClientImpl return null instead of zero in case of failure