src/vs/editor/common/services/modelService.ts/ModelService/_insertDisposedModel
class ModelService:	private _insertDisposedModel(disposedModelData: DisposedModelInfo): void {
		this._disposedModels.set(MODEL_ID(disposedModelData.uri), disposedModelData);
		this._disposedModelsHeapSize += disposedModelData.heapSize;
	}