# Fetch Chapter By Symbolic Link

Fetches details of a manga chapter including pages and images by its symbolic link, facilitating efficient data loading.

* **Parameters:**
  * `chapter`: The manga chapter to fetch, which must include a valid symbolic link.
* **Returns:** A `Chapter` object containing the fetched chapter details.
* **Raises:**
  * `SourceWasNotDefined` if no source has been set before calling this method.
  * `InvalidResource` if the provided chapter does not have a valid symbolic link.

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```python
# Example to fetch a chapter by its symbolic link
symbolic_link = SymbolicLink(link="http://example.com/chapter/1")
chapter = Chapter(id="1", pages=[], link=symbolic_link)

try:
    detailed_chapter = enma.fetch_chapter_by_symbolic_link(chapter=chapter)
    print(f"Fetched {len(detailed_chapter.pages)} pages.")
except InvalidResource:
    print("Error: Invalid chapter link.")
```

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