Transfer namespace decorators for nested references

Author: wol-soft

src/PropertyProcessor/Property/ReferenceProcessor.php

@@ -33,7 +33,11 @@ public function process(string $propertyName, JsonSchema $propertySchema): Prope
 
             if ($definition) {
                 if ($this->schema->getClassPath() !== $definition->getSchema()->getClassPath() ||
-                    $this->schema->getClassName() !== $definition->getSchema()->getClassName()
+                    $this->schema->getClassName() !== $definition->getSchema()->getClassName() ||
+                    (
+                        $this->schema->getClassPath() === 'ExternalSchema' &&
+                        $definition->getSchema()->getClassPath() === 'ExternalSchema'
+                    )
                 ) {
                     $this->schema->addNamespaceTransferDecorator(
                         new SchemaNamespaceTransferDecorator($definition->getSchema())