Object.defineProperty(OwnedStructure.prototype, "memory", {
    get: function () {
        if (!Memory.structures) {
            Memory.structures = {};
        }
        if (!Memory.structures[this.id]) {
            Memory.structures[this.id] = {};
        }
        return Memory.structures[this.id];
    },
    set: function(v) {
        return _.set(Memory, `structures.${this.id}`, v);
    },
    configurable: true,
    enumerable: false,
});