src/vs/workbench/common/editor/sideBySideEditorInput.ts/SideBySideEditorInputSerializer/createEditorInput
class SideBySideEditorInputSerializer:	protected createEditorInput(instantiationService: IInstantiationService, name: string, description: string | undefined, secondaryInput: EditorInput, primaryInput: EditorInput): EditorInput {
		return new SideBySideEditorInput(name, description, secondaryInput, primaryInput);
	}