ResiliencePipelineProvider<TKey>
Represents a provider for resilience pipelines that are accessible by TKey.
            
                using System.Collections.Generic;
using System.Diagnostics.CodeAnalysis;
using System.Runtime.CompilerServices;
namespace Polly.Registry
{
    [System.Runtime.CompilerServices.NullableContext(1)]
    [System.Runtime.CompilerServices.Nullable(0)]
    public abstract class ResiliencePipelineProvider<TKey>
    {
        public virtual ResiliencePipeline GetPipeline(TKey key)
        {
            if (TryGetPipeline(key, out ResiliencePipeline pipeline))
                return pipeline;
            throw new KeyNotFoundException($"""{key}""" + "Please ensure that either the resilience pipeline or the builder is registered.");
        }
        public virtual ResiliencePipeline<TResult> GetPipeline<[System.Runtime.CompilerServices.Nullable(2)] TResult>(TKey key)
        {
            if (TryGetPipeline(key, out ResiliencePipeline<TResult> pipeline))
                return pipeline;
            throw new KeyNotFoundException($"""{typeof(TResult).Name}""{key}""" + "Please ensure that either the generic resilience pipeline or the generic builder is registered.");
        }
        public abstract bool TryGetPipeline(TKey key, [System.Runtime.CompilerServices.Nullable(2)] [System.Diagnostics.CodeAnalysis.NotNullWhen(true)] out ResiliencePipeline pipeline);
        public abstract bool TryGetPipeline<[System.Runtime.CompilerServices.Nullable(2)] TResult>(TKey key, [System.Runtime.CompilerServices.Nullable(new byte[] {
            2,
            1
        })] [System.Diagnostics.CodeAnalysis.NotNullWhen(true)] out ResiliencePipeline<TResult> pipeline);
    }
}