Deprecate Kotlin methods that don't use reified types

Closes gh-10365

Author: eleftherias

config/src/main/kotlin/org/springframework/security/config/web/servlet/HttpSecurityDsl.kt

@@ -725,6 +725,7 @@ class HttpSecurityDsl(private val http: HttpSecurity, private val init: HttpSecu
      * @param atFilter the location of another [Filter] that is already registered
      * (i.e. known) with Spring Security.
      */
+    @Deprecated("Use 'addFilterAt<T>(filter)' instead.")
     fun addFilterAt(filter: Filter, atFilter: Class<out Filter>) {
         this.http.addFilterAt(filter, atFilter)
     }
@@ -751,6 +752,7 @@ class HttpSecurityDsl(private val http: HttpSecurity, private val init: HttpSecu
      * @param T the location of another [Filter] that is already registered
      * (i.e. known) with Spring Security.
      */
+    @Suppress("DEPRECATION")
     inline fun <reified T: Filter> addFilterAt(filter: Filter) {
         this.addFilterAt(filter, T::class.java)
     }
@@ -776,6 +778,7 @@ class HttpSecurityDsl(private val http: HttpSecurity, private val init: HttpSecu
      * @param afterFilter the location of another [Filter] that is already registered
      * (i.e. known) with Spring Security.
      */
+    @Deprecated("Use 'addFilterAfter<T>(filter)' instead.")
     fun addFilterAfter(filter: Filter, afterFilter: Class<out Filter>) {
         this.http.addFilterAfter(filter, afterFilter)
     }
@@ -802,6 +805,7 @@ class HttpSecurityDsl(private val http: HttpSecurity, private val init: HttpSecu
      * @param T the location of another [Filter] that is already registered
      * (i.e. known) with Spring Security.
      */
+    @Suppress("DEPRECATION")
     inline fun <reified T: Filter> addFilterAfter(filter: Filter) {
         this.addFilterAfter(filter, T::class.java)
     }
@@ -827,6 +831,7 @@ class HttpSecurityDsl(private val http: HttpSecurity, private val init: HttpSecu
      * @param beforeFilter the location of another [Filter] that is already registered
      * (i.e. known) with Spring Security.
      */
+    @Deprecated("Use 'addFilterBefore<T>(filter)' instead.")
     fun addFilterBefore(filter: Filter, beforeFilter: Class<out Filter>) {
         this.http.addFilterBefore(filter, beforeFilter)
     }
@@ -853,6 +858,7 @@ class HttpSecurityDsl(private val http: HttpSecurity, private val init: HttpSecu
      * @param T the location of another [Filter] that is already registered
      * (i.e. known) with Spring Security.
      */
+    @Suppress("DEPRECATION")
     inline fun <reified T: Filter> addFilterBefore(filter: Filter) {
         this.addFilterBefore(filter, T::class.java)
     }

config/src/main/kotlin/org/springframework/security/config/web/servlet/oauth2/login/UserInfoEndpointDsl.kt

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2020 the original author or authors.
+ * Copyright 2002-2021 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -53,6 +53,7 @@ class UserInfoEndpointDsl {
      * @param customUserType a custom [OAuth2User] type
      * @param clientRegistrationId the client registration identifier
      */
+    @Deprecated("Use 'customUserType<T>(clientRegistrationId)' instead.")
     fun customUserType(customUserType: Class<out OAuth2User>, clientRegistrationId: String) {
         customUserTypePair = Pair(customUserType, clientRegistrationId)
     }
@@ -65,6 +66,7 @@ class UserInfoEndpointDsl {
      * @param T a custom [OAuth2User] type
      * @param clientRegistrationId the client registration identifier
      */
+    @Suppress("DEPRECATION")
     inline fun <reified T: OAuth2User> customUserType(clientRegistrationId: String) {
         customUserType(T::class.java, clientRegistrationId)
     }