Squashed commit of the following:

commit cff18c4d385a70c65e22dec5cba4cf40cbe932fa
Author: Simon Cropp <[email protected]>
Date:   Mon Mar 31 11:42:53 2025 +1100

    .

commit 334839c8165d6cbe09e46f249a7ece0e24185cad
Author: Simon Cropp <[email protected]>
Date:   Mon Mar 31 11:38:26 2025 +1100

    make filter work for nav property

Author: SimonCropp

src/Tests/IntegrationTests/IntegrationTests.Multiple_nested_Filtered.verified.txt

@@ -0,0 +1,31 @@
+{
+  target:
+{
+  "data": {
+    "level1Entities": [
+      {
+        "level2Entity": {
+          "level3Entity": null
+        }
+      }
+    ]
+  }
+},
+  sql: {
+    Text:
+select l.Id,
+       l.Level2EntityId,
+       l.Level2EntityId1,
+       l0.Id,
+       l0.Level3EntityId,
+       l1.Id,
+       l1.Property
+from   Level1Entities as l
+       left outer join
+       Level2Entities as l0
+       on l.Level2EntityId1 = l0.Id
+       left outer join
+       Level3Entities as l1
+       on l0.Level3EntityId = l1.Id
+  }
+}

src/Tests/IntegrationTests/IntegrationTests_filtered.cs

@@ -42,6 +42,7 @@ static Filters<IntegrationDbContext> BuildFilters()
         var filters = new Filters<IntegrationDbContext>();
         filters.Add<FilterParentEntity>((_, _, _, item) => item.Property != "Ignore");
         filters.Add<FilterChildEntity>((_, _, _, item) => item.Property != "Ignore");
+        filters.Add<Level3Entity>((_, _, _, item) => item.Property != "Ignore");
         return filters;
     }
 
@@ -150,4 +151,40 @@ public async Task Connection_parent_child_Filtered()
         await using var database = await sqlInstance.Build();
         await RunQuery(database, query, null, BuildFilters(), false, [entity1, entity2, entity3]);
     }
+
+    [Fact]
+    public async Task Multiple_nested_Filtered()
+    {
+        var query =
+            """
+            {
+              level1Entities
+              {
+                level2Entity
+                {
+                  level3Entity
+                  {
+                    property
+                  }
+                }
+              }
+            }
+            """;
+
+        var level3 = new Level3Entity
+        {
+            Property = "Ignore"
+        };
+        var level2 = new Level2Entity
+        {
+            Level3Entity = level3
+        };
+        var level1 = new Level1Entity
+        {
+            Level2Entity = level2
+        };
+
+        await using var database = await sqlInstance.Build();
+        await RunQuery(database, query, null, BuildFilters(), false, [level1, level2, level3]);
+    }
 }