Add GetInputExtension method

[sungam3r]

Why does IResolveFieldContext.InputExtensions has IReadOnlyDictionary<string, object?> type instead of Inputs? Because of this I have to cast extensions

 // actually context.InputExtensions is of type GraphQL.Inputs
                if (context.InputExtensions is not IDictionary<string, object?> values || values.Count == 0)
                    return null;

[sungam3r]

Change IReadOnlyDictionary<string, object?> to Inputs for v8?

[Shane32]

Change IReadOnlyDictionary<string, object?> to Inputs for v8?

No, why? Because you had a cast in there? Just change the code to match on IReadOnlyDictionary.

[sungam3r]

No, why? Because you had a cast in there?

Because IReadOnlyDictionary<T,U> does not inherit IDictionary<T,U> and vice versa.

Just change the code to match on IReadOnlyDictionary.

Does not compile. I rewrote it and added comment.

[Shane32]

I would suggest changing the signature here to IReadOnlyDictionary here and the is IDictionary line. It probably makes little difference, as the ImmutableDictionary class and even the brand-new FrozenDictionary class supports IDictionary as well as IReadOnlyDictionary.

[sungam3r]

done

[codecov-commenter]

Codecov Report

Merging #3615 (d2fd2b8) into master (1ae26bf) will increase coverage by 0.00%.
The diff coverage is 95.00%.

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@@           Coverage Diff           @@
##           master    #3615   +/-   ##
=======================================
  Coverage   83.91%   83.92%           
=======================================
  Files         381      381           
  Lines       16876    16888   +12     
  Branches     2715     2717    +2     
=======================================
+ Hits        14162    14173   +11     
- Misses       2068     2069    +1     
  Partials      646      646           

Impacted Files	Coverage Δ
...solveFieldContext/ResolveFieldContextExtensions.cs	86.66% <94.44%> (+2.70%)	⬆️
src/GraphQL/Execution/DocumentExecuter.cs	93.54% <100.00%> (-0.07%)	⬇️

... and 1 file with indirect coverage changes