function MapField(name, id, keyType, type, options, comment) {
        Field.call(
          this,
          name,
          id,
          type,
          undefined,
          undefined,
          options,
          comment
        );

        /* istanbul ignore if */
        if (!util.isString(keyType))
          throw TypeError("keyType must be a string");

        /**
         * Key type.
         * @type {string}
         */
        this.keyType = keyType; // toJSON, marker

        /**
         * Resolved key type if not a basic type.
         * @type {ReflectionObject|null}
         */
        this.resolvedKeyType = null;

        // Overrides Field#map
        this.map = true;
      }
/**
       * Constructs a new map field instance.
       * @classdesc Reflected map field.
       * @extends FieldBase
       * @constructor
       * @param {string} name Unique name within its namespace
       * @param {number} id Unique id within its namespace
       * @param {string} keyType Key type
       * @param {string} type Value type
       * @param {Object.<string,*>} [options] Declared options
       * @param {string} [comment] Comment associated with this field
       */
Constructs a new map field instance.
@classdesc Reflected map field.
Constructs a new map field instance . @classdesc Reflected map field .
function MapField(name, id, keyType, type, options, comment) {
        Field.call(
          this,
          name,
          id,
          type,
          undefined,
          undefined,
          options,
          comment
        );
        if (!util.isString(keyType))
          throw TypeError("keyType must be a string");
        this.keyType = keyType; 
        this.resolvedKeyType = null;
        this.map = true;
      }
function MapField ( name , id , keyType , type , options , comment ) { Field . call ( this , name , id , type , undefined , undefined , options , comment ) ; if ( ! util . isString ( keyType ) ) throw TypeError ( "keyType must be a string" ) ; this . keyType = keyType ; this . resolvedKeyType = null ; this . map = true ; }
Constructs a new map field instance.
Constructs a new map field instance .
/* istanbul ignore if */ /**
         * Key type.
         * @type {string}
         */ // toJSON, marker /**
         * Resolved key type if not a basic type.
         * @type {ReflectionObject|null}
         */ // Overrides Field#map