Method serialize

projects/JavaScript/proto/test.js:20670–20674

* Serialize the struct value * @this {!StructMapModel} * @param {!StructMap} value StructMap value * @return {!number} Model begin offset

(value)

   * @return {!number} Model begin offset
   */
  serialize (value) {
    let fbeBegin = this.createBegin()
    this.model.set(value)
    return this.createEnd(fbeBegin)
  }

  /**
   * Deserialize the struct value