Continuation fixes

Author: pwelter34

src/MediatR.CommandQuery/Queries/EntityContinuationQuery.cs

@@ -7,16 +7,20 @@ namespace MediatR.CommandQuery.Queries;
 
 public record EntityContinuationQuery<TReadModel> : CacheableQueryBase<EntityContinuationResult<TReadModel>>
 {
-    public EntityContinuationQuery(ClaimsPrincipal? principal, EntitySelect? query, string? continuationToken = null)
+    public EntityContinuationQuery(ClaimsPrincipal? principal, EntitySelect? query, int pageSize = 10, string? continuationToken = null)
         : base(principal)
     {
         Query = query ?? new EntitySelect();
+        PageSize = pageSize;
         ContinuationToken = continuationToken;
     }
 
     [JsonPropertyName("query")]
     public EntitySelect Query { get; }
 
+    [JsonPropertyName("pageSize")]
+    public int PageSize { get; }
+
     [JsonPropertyName("continuationToken")]
     [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
     public string? ContinuationToken { get; }
@@ -25,7 +29,7 @@ public override string GetCacheKey()
         => CacheTagger.GetKey<TReadModel, int>
         (
             bucket: CacheTagger.Buckets.Continuation,
-            value: HashCode.Combine(Query.GetHashCode(), ContinuationToken)
+            value: HashCode.Combine(Query.GetHashCode(), PageSize, ContinuationToken)
         );
 
     public override string? GetCacheTag()

src/MediatR.CommandQuery/Queries/EntityContinuationResult.cs

@@ -4,10 +4,6 @@ namespace MediatR.CommandQuery.Queries;
 
 public class EntityContinuationResult<TReadModel>
 {
-    [JsonPropertyName("previousToken")]
-    [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
-    public string? PreviousToken { get; set; }
-
     [JsonPropertyName("continuationToken")]
     [JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
     public string? ContinuationToken { get; set; }