// A func, if not package-level, must be a method.
		if recv := obj.Type().(*types.Signature).Recv(); recv == nil {
			return "", fmt.Errorf("func is not a method: %v", obj)
		}

		if path, ok := enc.concreteMethod(obj); ok {
			// Fast path for concrete methods that avoids looping over scope.
			return path, nil
		}

	default:
		panic(obj)
	}