code: function __serializeType(type, options) {
  	let typeHeader = (type) ? TYPE_HEADER[type.toUpperCase()] : [];
  	let typeData = new Uint8Array(typeHeader);
  	return typeData.buffer;
  }
docs: Serialize type
  @param {string} type
  @param {BESONSerializerOption} options
  @returns {ArrayBuffer}
  @private