type: object
description: Document metadata for library management
properties:
  url:
    type: string
    description: Document URL or identifier
    example: https://example.com/document.pdf
  title:
    type: string
    description: Document title
    example: Example Document
  author:
    type: string
    description: Document author
    example: John Doe
  date:
    type: string
    description: Document date
    example: "2024-01-15"
  metadata:
    type: object
    description: Additional metadata fields
    additionalProperties: true
    example:
      department: Engineering
      category: Technical