remove validations of "copy" and "constant" (they shouldn't be here)

Author: clemzarch

src/Configuration.php

@@ -33,6 +33,7 @@ public function getConfigTreeBuilder(): TreeBuilder
             ->end()
             ->children()
                 ->scalarNode('class')->end()
+                ->booleanNode('append')->end()
                 ->scalarNode('expression')->end()
                 ->arrayNode('expression_language')
                     ->scalarPrototype()->end()
@@ -48,25 +49,22 @@ public function getConfigTreeBuilder(): TreeBuilder
                 ->thenInvalid('Your configuration should be an array.')
             ->end()
             ->validate()
-                ->always(mutuallyExclusiveFields('copy', 'constant', 'map', 'object', 'list', 'collection'))
+                ->always(mutuallyExclusiveFields('append', 'list', 'collection', 'object'))
             ->end()
             ->validate()
-                ->always(mutuallyExclusiveFields('expression', 'copy', 'constant', 'map'))
+                ->always(mutuallyExclusiveFields('expression', 'map'))
             ->end()
             ->validate()
-                ->always(mutuallyExclusiveFields('constant', 'copy', 'map', 'object', 'list', 'collection'))
+                ->always(mutuallyExclusiveFields('map', 'object', 'list', 'collection'))
             ->end()
             ->validate()
-                ->always(mutuallyExclusiveFields('map', 'copy', 'constant', 'object', 'list', 'collection'))
+                ->always(mutuallyExclusiveFields('object', 'map', 'list', 'collection'))
             ->end()
             ->validate()
-                ->always(mutuallyExclusiveFields('object', 'copy', 'constant', 'map', 'list', 'collection'))
+                ->always(mutuallyExclusiveFields('list', 'map', 'object', 'collection'))
             ->end()
             ->validate()
-                ->always(mutuallyExclusiveFields('list', 'copy', 'constant', 'map', 'object', 'collection'))
-            ->end()
-            ->validate()
-                ->always(mutuallyExclusiveFields('collection', 'copy', 'constant', 'map', 'object', 'list'))
+                ->always(mutuallyExclusiveFields('collection', 'map', 'object', 'list'))
             ->end()
             ->validate()
                 ->always(mutuallyDependentFields('object', 'class', 'expression'))