Clean up moniker hell

Author: Rick-Anderson

aspnetcore/fundamentals/openapi/include-metadata.md

@@ -314,8 +314,6 @@ app.MapGet("/todos",
     async (TodoDb db) => await db.Todos.ToListAsync());
 ```
 
-:::moniker range=">= aspnetcore-10.0"
-
 [`[ProducesResponseType]`](xref:Microsoft.AspNetCore.Mvc.ProducesResponseTypeAttribute), [`[Produces]`](xref:Microsoft.AspNetCore.Mvc.ProducesAttribute), and [`[ProducesDefaultResponseType]`](xref:Microsoft.AspNetCore.Mvc.ProducesResponseTypeAttribute) also support an optional string property called `Description` that can be used to describe the response. This is useful for explaining why or when clients can expect a specific response:
 
 ```csharp
@@ -327,8 +325,6 @@ app.MapGet("/todos/{id}",
     async (int id, TodoDb db) => /* Code here */);
 ```
 
-:::moniker-end
-
 Using <xref:Microsoft.AspNetCore.Http.TypedResults> in the implementation of an endpoint's route handler automatically includes the response type metadata for the endpoint. For example, the following code automatically annotates the endpoint with a response under the `200` status code with an `application/json` content type.
 
 ```csharp
@@ -398,8 +394,6 @@ Only one [`[Produces]`](xref:Microsoft.AspNetCore.Mvc.ProducesAttribute) or <xre
 
 All of the above attributes can be applied to individual action methods or to the controller class where it applies to all action methods in the controller.
 
-:::moniker range=">= aspnetcore-10.0"
-
 [`[ProducesResponseType]`](xref:Microsoft.AspNetCore.Mvc.ProducesResponseTypeAttribute), [`[Produces]`](xref:Microsoft.AspNetCore.Mvc.ProducesAttribute), and [`[ProducesDefaultResponseType]`](xref:Microsoft.AspNetCore.Mvc.ProducesResponseTypeAttribute) also support an optional string property called `Description` that can be used to describe the response. This is useful for explaining why or when clients can expect a specific response:
 
 ```csharp
@@ -412,8 +406,6 @@ All of the above attributes can be applied to individual action methods or to th
 public async Task<ActionResult<Todo>> GetTodoItem(string id, Todo todo)
 ```
 
-:::moniker-end
-
 When not specified by an attribute:
 
 * The status code for the response defaults to 200.
@@ -493,8 +485,6 @@ of the property in the schema.
 
 ### type and format
 
-:::moniker range="< aspnetcore-10.0"
-
 The JSON Schema library maps standard C# types to OpenAPI `type` and `format` as follows:
 
 | C# Type        | OpenAPI `type` | OpenAPI `format` |
@@ -522,10 +512,6 @@ Note that object and dynamic types have _no_ type defined in the OpenAPI because
 
 The `type` and `format` can also be set with a [Schema Transformer](xref:fundamentals/openapi/customize-openapi#use-schema-transformers). For example, you may want the `format` of decimal types to be `decimal` instead of `double`.
 
-:::moniker-end
-
-:::moniker range=">= aspnetcore-10.0"
-
 #### Numeric types
 
 The JSON Schema library maps standard C# numeric types to OpenAPI `type` and `format` based on the
@@ -593,8 +579,6 @@ Other C# types are represented in the generated OpenAPI document as shown in the
 | object         | _omitted_      |                  |
 | dynamic        | _omitted_      |                  |
 
-:::moniker-end
-
 ### Use attributes to add metadata
 
 ASP.NET uses metadata from attributes on class or record properties to set metadata on the corresponding properties of the generated schema.
@@ -675,13 +659,6 @@ An enum type without a  [`[JsonConverter]`](xref:System.Text.Json.Serialization.
 
 #### nullable
 
-:::moniker range="< aspnetcore-10.0"
-
-Properties defined as a nullable value or reference type have `nullable: true` in the generated schema. This is consistent with the default behavior of the <xref:System.Text.Json> deserializer, which accepts `null` as a valid value for a nullable property.
-
-:::moniker-end
-:::moniker range=">= aspnetcore-10.0"
-
 Properties defined as a nullable value or reference type appear in the generated schema with a `type` keyword whose value is an array that includes `null` as one of the types. This is consistent with the default behavior of the <xref:System.Text.Json> deserializer, which accepts `null` as a valid value for a nullable property.
 
 For example, a C# property defined as `string?` is represented in the generated schema as:
@@ -698,8 +675,6 @@ For example, a C# property defined as `string?` is represented in the generated
 
 If the app is configured to produce OpenAPI v3.0 or OpenAPI v2 documents, nullable value or reference types have `nullable: true` in the generated schema because these OpenAPI versions do not allow the `type` field to be an array.
 
-:::moniker-end
-
 #### additionalProperties
 
 Schemas are generated without an `additionalProperties` assertion by default, which implies the default of `true`. This is consistent with the default behavior of the <xref:System.Text.Json> deserializer, which silently ignores additional properties in a JSON object.
@@ -722,3 +697,7 @@ A schema transformer can be used to override any default metadata or add additio
 
 * <xref:fundamentals/openapi/using-openapi-documents>
 * [OpenAPI specification](https://spec.openapis.org/oas/v3.0.3)
+
+:::moniker-end
+
+[!INCLUDE[](~\fundamentals\openapi\includes\include-metadata9.md)]