typedapi/types/nullvalue.go (5 lines of code) (raw):

// Licensed to Elasticsearch B.V. under one or more contributor // license agreements. See the NOTICE file distributed with // this work for additional information regarding copyright // ownership. Elasticsearch B.V. licenses this file to you under // the Apache License, Version 2.0 (the "License"); you may // not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, // software distributed under the License is distributed on an // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY // KIND, either express or implied. See the License for the // specific language governing permissions and limitations // under the License. package types // NullValue is a custom type used to represent the concept of a null or missing value. // It can be used as a placeholder for variables or fields that are not initialized, // or to indicate that a specific piece of data is intentionally absent. type NullValue struct{} // MarshalJSON converts the NullValue to JSON format. // It always returns a "null" value as per JSON standard for null values. func (n NullValue) MarshalJSON() ([]byte, error) { return []byte("null"), nil }