Function serializeList

http/unstable_structured_fields.ts:1160–1172

(list: List)

 * ```
 */
export function serializeList(list: List): string {
  const parts: string[] = [];

  for (const member of list) {
    if ("items" in member) {
      parts.push(serializeInnerList(member));
    } else {
      parts.push(serializeItemInternal(member));
    }
  }

  return parts.join(", ");
}

/**
 * Serializes a Dictionary to a string.