Interlok 4134 correct null implementations v4

[jameswickham]

Motivation

Updating the interface so the two List methods have default implementations that will throw a UnsupportedOperationException exception if called.

This is to replace having null implementions defined within the classes that don't need them.

Modification

RetryStore interface and the classes that implement it.

PR Checklist

• been self-reviewed.
• Added javadocs for most classes and all non-trivial methods
• [n/a] Added supporting annotations (like @XStreamAlias / @ComponentProfile)
• [n/a] Added DefaultValue annotation when there is a default value (e.g. @DefaultValue('true'))
• [n/a] Added validation annotation (@NotNull...) when required and add @Valid when nested class has some validation
• [n/a] Checked that @NotNull and @notblank annotations have a meaningful message when appropriate.
• [n/a] Checked that new 3rd party dependencies are appropriately licensed
• [n/a] Added comments explaining the "why" and the intent of the code wherever it would not be obvious for an unfamiliar reader
• [n/a] Added unit tests or modified existing tests to cover new code paths
• [n/a] Tested new/updated components in the UI and at runtime in an Interlok instance
• [n/a] Reviewed java class members so that missing annotations are added (InputFieldDefault/ComponentProfile etc)
• [n/a] Checked that javadoc generation doesn't report errors
• [n/a] Checked the display of the component in the UI
• [n/a] Remove any config/license annotations
• [n/a] Check the gradle build file to make sure the dependencies section is more explicit "implementation/api".

Result

What's the end result for the user

Testing

How can I test this if I'm reviewing this.

[codecov]

Codecov Report

Patch coverage has no change and project coverage change: +0.06% 🎉

Comparison is base (bbfe19d) 93.39% compared to head (b9f3bbf) 93.45%.

Additional details and impacted files

@@               Coverage Diff                @@
##             develop-v4    #1227      +/-   ##
================================================
+ Coverage         93.39%   93.45%   +0.06%     
- Complexity        11127    11128       +1     
================================================
  Files              1086     1086              
  Lines             29876    29876              
  Branches           2105     2105              
================================================
+ Hits              27904    27922      +18     
+ Misses             1542     1520      -22     
- Partials            430      434       +4     

Files Changed	Coverage Δ
...is/core/http/jetty/retry/FilesystemRetryStore.java	95.60% <ø> (+2.05%)	⬆️
...com/adaptris/core/http/jetty/retry/RetryStore.java	71.42% <0.00%> (-28.58%)	⬇️

... and 6 files with indirect coverage changes

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