Move Opaque Token Migration Steps

docs/modules/ROOT/pages/migration-7/authentication.adoc

@@ -1,68 +1,2 @@
 = Authentication Changes
 
-== Opaque Token Credentials Will Be Encoded For You
-
-In order to comply more closely with the Introspection RFC, Spring Security's opaque token support will encode the client id and secret before creating the authorization header.
-This change means you will no longer have to encode the client id and secret yourself.
-
-If your client id or secret contain URL-unsafe characters, then you can prepare yourself for this change by doing the following:
-
-=== Replace Usage of `introspectionClientCredentials`
-
-Since Spring Security can now do the encoding for you, replace xref:servlet/oauth2/resource-server/opaque-token.adoc#oauth2resourceserver-opaque-introspectionuri-dsl[using `introspectionClientCredentials`] with publishing the following `@Bean`:
-
-[tabs]
-======
-Java::
-+
-[source,java,role="primary"]
-----
-@Bean
-OpaqueTokenIntrospector introspector() {
-	return SpringOpaqueTokenIntrospector.withIntrospectionUri(introspectionUri)
-            .clientId(unencodedClientId).clientSecret(unencodedClientSecret).build();
-}
-----
-
-Kotlin::
-+
-[source,kotlin,role="secondary"]
-----
-@Bean
-fun introspector(): OpaqueTokenIntrospector {
-    return SpringOpaqueTokenIntrospector.withIntrospectionUri(introspectionUri)
-            .clientId(unencodedClientId).clientSecret(unencodedClientSecret).build()
-}
-----
-======
-
-The above will be the default in 7.0.
-
-If this setting gives you trouble or you cannot apply it for now, you can use the `RestOperations` constructor instead:
-
-[tabs]
-======
-Java::
-+
-[source,java,role="primary"]
-----
-@Bean
-OpaqueTokenIntrospector introspector() {
-	RestTemplate rest = new RestTemplate();
-	rest.addInterceptor(new BasicAuthenticationInterceptor(encodedClientId, encodedClientSecret));
-	return new SpringOpaqueTokenIntrospector(introspectionUri, rest);
-}
-----
-
-Kotlin::
-+
-[source,kotlin,role="secondary"]
-----
-@Bean
-fun introspector(): OpaqueTokenIntrospector {
-	val rest = RestTemplate()
-	rest.addInterceptor(BasicAuthenticationInterceptor(encodedClientId, encodedClientSecret))
-	return SpringOpaqueTokenIntrospector(introspectionUri, rest)
-}
-----
-======

docs/modules/ROOT/pages/migration-7/oauth2.adoc

@@ -170,3 +170,70 @@ fun jwtDecoder(): JwtDecoder {
 <2> - specify the list of validators you need, excluding `JwtTypeValidator`
 
 For additional guidance, please see the xref:servlet/oauth2/resource-server/jwt.adoc#oauth2resourceserver-jwt-validation[JwtDecoder Validators] section in the reference.
+
+== Opaque Token Credentials Will Be Encoded For You
+
+In order to comply more closely with the Introspection RFC, Spring Security's opaque token support will encode the client id and secret before creating the authorization header.
+This change means you will no longer have to encode the client id and secret yourself.
+
+If your client id or secret contain URL-unsafe characters, then you can prepare yourself for this change by doing the following:
+
+=== Replace Usage of `introspectionClientCredentials`
+
+Since Spring Security can now do the encoding for you, replace xref:servlet/oauth2/resource-server/opaque-token.adoc#oauth2resourceserver-opaque-introspectionuri-dsl[using `introspectionClientCredentials`] with publishing the following `@Bean`:
+
+[tabs]
+======
+Java::
++
+[source,java,role="primary"]
+----
+@Bean
+OpaqueTokenIntrospector introspector() {
+	return SpringOpaqueTokenIntrospector.withIntrospectionUri(introspectionUri)
+            .clientId(unencodedClientId).clientSecret(unencodedClientSecret).build();
+}
+----
+
+Kotlin::
++
+[source,kotlin,role="secondary"]
+----
+@Bean
+fun introspector(): OpaqueTokenIntrospector {
+    return SpringOpaqueTokenIntrospector.withIntrospectionUri(introspectionUri)
+            .clientId(unencodedClientId).clientSecret(unencodedClientSecret).build()
+}
+----
+======
+
+The above will be the default in 7.0.
+
+If this setting gives you trouble or you cannot apply it for now, you can use the `RestOperations` constructor instead:
+
+[tabs]
+======
+Java::
++
+[source,java,role="primary"]
+----
+@Bean
+OpaqueTokenIntrospector introspector() {
+	RestTemplate rest = new RestTemplate();
+	rest.addInterceptor(new BasicAuthenticationInterceptor(encodedClientId, encodedClientSecret));
+	return new SpringOpaqueTokenIntrospector(introspectionUri, rest);
+}
+----
+
+Kotlin::
++
+[source,kotlin,role="secondary"]
+----
+@Bean
+fun introspector(): OpaqueTokenIntrospector {
+	val rest = RestTemplate()
+	rest.addInterceptor(BasicAuthenticationInterceptor(encodedClientId, encodedClientSecret))
+	return SpringOpaqueTokenIntrospector(introspectionUri, rest)
+}
+----
+======