method-security: fix invalid Kotlin syntax

val/var on function parameters is invalid Kotlin syntax. It has been removed quite some time ago. This change updates the method-security page to reflect that.

Signed-off-by: Simão Gomes Viana <simao.gomes@toowoxx.de>

docs/modules/ROOT/pages/servlet/authorization/method-security.adoc

@@ -108,7 +108,7 @@ Kotlin::
 open class MyCustomerService {
     @PreAuthorize("hasAuthority('permission:read')")
     @PostAuthorize("returnObject.owner == authentication.name")
-    fun readCustomer(val id: String): Customer { ... }
+    fun readCustomer(id: String): Customer { ... }
 }
 ----
 ======
@@ -338,7 +338,7 @@ Kotlin::
 @Component
 open class BankService {
 	@PreAuthorize("hasRole('ADMIN')")
-	fun readAccount(val id: Long): Account {
+	fun readAccount(id: Long): Account {
         // ... is only invoked if the `Authentication` has the `ROLE_ADMIN` authority
 	}
 }
@@ -426,7 +426,7 @@ Kotlin::
 @Component
 open class BankService {
 	@PostAuthorize("returnObject.owner == authentication.name")
-	fun readAccount(val id: Long): Account {
+	fun readAccount(id: Long): Account {
         // ... is only returned if the `Account` belongs to the logged in user
 	}
 }
@@ -536,7 +536,7 @@ Kotlin::
 @Component
 open class BankService {
 	@RequireOwnership
-	fun readAccount(val id: Long): Account {
+	fun readAccount(id: Long): Account {
         // ... is only returned if the `Account` belongs to the logged in user
 	}
 }
@@ -993,7 +993,7 @@ Kotlin::
 @Component
 open class BankService {
 	@IsAdmin
-	fun readAccount(val id: Long): Account {
+	fun readAccount(id: Long): Account {
         // ... is only returned if the `Account` belongs to the logged in user
 	}
 }
@@ -1084,7 +1084,7 @@ Kotlin::
 @Component
 open class BankService {
 	@HasRole("ADMIN")
-	fun readAccount(val id: Long): Account {
+	fun readAccount(id: Long): Account {
         // ... is only returned if the `Account` belongs to the logged in user
 	}
 }
@@ -1144,7 +1144,7 @@ Kotlin::
 @Component
 open class BankService {
 	@HasAnyRole(roles = arrayOf("'USER'", "'ADMIN'"))
-	fun readAccount(val id: Long): Account {
+	fun readAccount(id: Long): Account {
         // ... is only returned if the `Account` belongs to the logged in user
 	}
 }
@@ -1271,7 +1271,7 @@ Kotlin::
 ----
 @Component("authz")
 open class AuthorizationLogic {
-    fun decide(val operations: MethodSecurityExpressionOperations): boolean {
+    fun decide(operations: MethodSecurityExpressionOperations): boolean {
         // ... authorization logic
     }
 }
@@ -1342,7 +1342,7 @@ Kotlin::
 ----
 @Component("authz")
 open class AuthorizationLogic {
-    fun decide(val operations: MethodSecurityExpressionOperations): AuthorizationDecision {
+    fun decide(operations: MethodSecurityExpressionOperations): AuthorizationDecision {
         // ... authorization logic
         return MyAuthorizationDecision(false, details)
     }
@@ -1435,13 +1435,13 @@ Kotlin::
 class MethodSecurityConfig {
    	@Bean
 	@Role(BeanDefinition.ROLE_INFRASTRUCTURE)
-	fun preAuthorize(val manager: MyAuthorizationManager) : Advisor {
+	fun preAuthorize(manager: MyAuthorizationManager) : Advisor {
 		return AuthorizationManagerBeforeMethodInterceptor.preAuthorize(manager)
 	}
 
 	@Bean
 	@Role(BeanDefinition.ROLE_INFRASTRUCTURE)
-	fun postAuthorize(val manager: MyAuthorizationManager) : Advisor {
+	fun postAuthorize(manager: MyAuthorizationManager) : Advisor {
 		return AuthorizationManagerAfterMethodInterceptor.postAuthorize(manager)
 	}
 }
@@ -1501,7 +1501,7 @@ Kotlin::
 ----
 companion object {
 	@Bean
-	fun methodSecurityExpressionHandler(val roleHierarchy: RoleHierarchy) : MethodSecurityExpressionHandler {
+	fun methodSecurityExpressionHandler(roleHierarchy: RoleHierarchy) : MethodSecurityExpressionHandler {
 		val handler = DefaultMethodSecurityExpressionHandler()
 		handler.setRoleHierarchy(roleHierarchy)
 		return handler
@@ -3236,7 +3236,7 @@ Kotlin::
 [source,kotlin,role="secondary"]
 ----
 class MyAuthorizer {
-	fun isAdmin(val root: MethodSecurityExpressionOperations): boolean {
+	fun isAdmin(root: MethodSecurityExpressionOperations): boolean {
 		val decision = root.hasAuthority("ADMIN");
 		// custom work ...
         return decision;
@@ -3295,7 +3295,7 @@ Kotlin::
 ----
 @Component
 class MyExpressionHandler: DefaultMethodSecurityExpressionHandler {
-    override fun createEvaluationContext(val authentication: Supplier<Authentication>,
+    override fun createEvaluationContext(authentication: Supplier<Authentication>,
         val mi: MethodInvocation): EvaluationContext {
 		val context = super.createEvaluationContext(authentication, mi) as StandardEvaluationContext
         val delegate = context.getRootObject().getValue() as MethodSecurityExpressionOperations