diff --git a/src/Generator/Type/GraphQL.php b/src/Generator/Type/GraphQL.php
index 7c6abe3f..1e166998 100644
--- a/src/Generator/Type/GraphQL.php
+++ b/src/Generator/Type/GraphQL.php
@@ -60,17 +60,6 @@ protected function getMap(string $type): string
         return '[' . $type . ']';
     }
 
-    protected function getUnion(array $types): string
-    {
-        return implode(' | ', $types);
-    }
-
-    protected function getIntersection(array $types): string
-    {
-        // in GraphQL there is no intersection type
-        return implode(' | ', $types);
-    }
-
     protected function getGroup(string $type): string
     {
         return '(' . $type . ')';
diff --git a/src/Generator/Type/MarkupAbstract.php b/src/Generator/Type/MarkupAbstract.php
index 4cb6a660..770979d5 100644
--- a/src/Generator/Type/MarkupAbstract.php
+++ b/src/Generator/Type/MarkupAbstract.php
@@ -76,16 +76,6 @@ protected function getMap(string $type): string
         return 'Map (' . $type . ')';
     }
 
-    protected function getUnion(array $types): string
-    {
-        return implode(' | ', $types);
-    }
-
-    protected function getIntersection(array $types): string
-    {
-        return implode(' & ', $types);
-    }
-
     protected function getGroup(string $type): string
     {
         return '(' . $type . ')';
diff --git a/src/Generator/Type/Protobuf.php b/src/Generator/Type/Protobuf.php
index 72854a72..cc795c5d 100644
--- a/src/Generator/Type/Protobuf.php
+++ b/src/Generator/Type/Protobuf.php
@@ -70,16 +70,6 @@ protected function getMap(string $type): string
         return 'map<string, ' . $type . '>';
     }
 
-    protected function getUnion(array $types): string
-    {
-        return 'Struct';
-    }
-
-    protected function getIntersection(array $types): string
-    {
-        return 'Struct';
-    }
-
     protected function getGroup(string $type): string
     {
         return '(' . $type . ')';