class SuccessMessage: FETCHED = "Data fetched successfully" CREATED = "Resource created successfully" UPDATED = "Resource updated successfully" DELETED = "Resource deleted successfully" LOGIN = "Login successful" LOGOUT = "Logout successful" class ErrorMessage: INVALID_REQUEST = "Invalid request data" UNAUTHORIZED = "Unauthorized access" FORBIDDEN = "Access forbidden" NOT_FOUND = "Resource not found" VALIDATION_FAILED = "Validation failed" INTERNAL_ERROR = "Internal server error" DUPLICATE_ENTRY = "Duplicate record found"