diff -r 5bb26aa33ad5 -r 719b909a7d2b src/documentmanager.cpp
--- a/src/documentmanager.cpp	Wed Jul 20 21:35:55 2022 +0300
+++ b/src/documentmanager.cpp	Wed Jul 20 21:48:46 2022 +0300
@@ -54,7 +54,7 @@
 	return modelId;
 }
 
-Model* DocumentManager::findDependencyByName(const ModelId modelId, const QString& name)
+QTextDocument* DocumentManager::findDependencyByName(const ModelId modelId, const QString& name)
 {
 	const auto modelsIterator = this->openModels.find(modelId);
 	if (modelsIterator != std::end(this->openModels)) {
@@ -78,7 +78,7 @@
  * @param modelId id of model to find
  * @returns model pointer or null
  */
-Model *DocumentManager::getModelById(ModelId modelId)
+QTextDocument *DocumentManager::getModelById(ModelId modelId)
 {
 	const auto iterator = this->openModels.find(modelId);
 	if (iterator != this->openModels.end())
@@ -228,7 +228,7 @@
  * @param model model to look for
  * @return id or no value if not found
  */
-std::optional<ModelId> DocumentManager::findIdForModel(const Model *model) const
+std::optional<ModelId> DocumentManager::findIdForModel(const QTextDocument *model) const
 {
 	std::optional<ModelId> result;
 	for (auto it = this->openModels.begin(); it != this->openModels.end(); ++it)
@@ -325,7 +325,7 @@
 
 void DocumentManager::makePolygonCacheForModel(const ModelId modelId)
 {
-	Model* model = this->getModelById(modelId);
+	QTextDocument* model = this->getModelById(modelId);
 	if (model != nullptr)
 	{
 		const auto modelModified = [this, model]{
@@ -358,7 +358,7 @@
 	return referencedFilePath;
 }
 
-static std::set<QString> referenceNames(const Model* model)
+static std::set<QString> referenceNames(const QTextDocument* model)
 {
 	std::set<QString> result;
 	for (const QString& line : model->toPlainText().split("\n")) {