src/vs/workbench/browser/editor.ts/EditorPaneRegistry/getEditors
class EditorPaneRegistry:	getEditors(): SyncDescriptor<EditorInput>[] {
		const editorClasses: SyncDescriptor<EditorInput>[] = [];
		for (const editorPane of this.editorPanes) {
			const editorDescriptors = this.mapEditorPanesToEditors.get(editorPane);
			if (editorDescriptors) {
				editorClasses.push(...editorDescriptors.map(editorDescriptor => editorDescriptor.ctor));
			}
		}

		return editorClasses;
	}