34     T operator()(const U& t) const  in operator ()()
85  * @brief Implements the minus operator to subtract two values.
96     PropertyVariantType operator()(double val) override  in operator ()()
101     PropertyVariantType operator()(int32_t val) override  in operator ()()
106     PropertyVariantType operator()(int64_t val) override  in operator ()()
111     PropertyVariantType operator()(const std::string& val) override  in operator ()()
125     PropertyVariantType operator()(bool) override  in operator ()()
135  * @brief Implements an operator to return a value specified in the JSON that is
136  * chosen based on if the value passed into the operator is less than the lowest
141  *  "operator": "less_than",
213     PropertyVariantType operator()(double val) override  in operator ()()
226     PropertyVariantType operator()(int32_t val) override  in operator ()()
238     PropertyVariantType operator()(int64_t val) override  in operator ()()
250     PropertyVariantType operator()(const std::string& val) override  in operator ()()
263     PropertyVariantType operator()(bool) override  in operator ()()
281     if (!jsonObj.contains("operator") || !jsonObj.contains("value"))  in setOperator()
284             "Modifier entry in JSON missing 'operator' or 'value': {JSON_OBJECT}",  in setOperator()
289     auto op = jsonObj["operator"].get<std::string>();  in setOperator()
301         lg2::error("Invalid operator in the modifier JSON: {JSON_OBJECT}",  in setOperator()
303         throw std::invalid_argument("Invalid operator in the modifier JSON");  in setOperator()