test-integration/Microsoft.Azure.WebJobs.Extensions.OpenApi.TestApp/DocumentFilters/RewriteDescriptionDocumentFilter.cs

using Microsoft.Azure.WebJobs.Extensions.OpenApi.Core.Abstractions;
using Microsoft.OpenApi.Models;

namespace Microsoft.Azure.WebJobs.Extensions.OpenApi.TestApp.DocumentFilters
{
    internal class RewriteDescriptionDocumentFilter : IDocumentFilter
    {
        public void Apply(IHttpRequestDataObject request, OpenApiDocument document)
        {
            if (document.Paths.ContainsKey("/get-documentfilter"))
            {
                document
                    .Paths["/get-documentfilter"]
                    .Operations[OperationType.Get]
                    .Responses["200"]
                    .Description += " rewritten";
            }
        }
    }
}