src/vs/workbench/browser/parts/editor/sideBySideEditor.ts/SideBySideEditor/setEditorVisible
class SideBySideEditor:	protected override setEditorVisible(visible: boolean, group: IEditorGroup | undefined): void {
		if (this.primaryEditorPane) {
			this.primaryEditorPane.setVisible(visible, group);
		}

		if (this.secondaryEditorPane) {
			this.secondaryEditorPane.setVisible(visible, group);
		}

		super.setEditorVisible(visible, group);
	}