Makes the source parameter of GraphDocument optional

[alexthomas93]

Description

This PR updates the GraphDocument class to make the source parameter optional. It also updates the add_graph_documents method of the Neo4jGraph class to work with this. This is to allow users to add nodes and relationships to a graph without the need for a source document.

Type of Change

• New feature
• Bug fix
• Breaking change
• Project configuration change

Complexity

Low

How Has This Been Tested?

• Unit tests
• Integration tests
• Manual tests

Checklist

• Unit tests updated
• Integration tests updated
• CHANGELOG.md updated

[alexthomas93]

@CodiumAI-Agent /update_changelog

[CodiumAI-Agent]

Changelog updates: 🔄

[2025-01-07][https://github.com//pull/32]

Changed

• Made the source parameter of GraphDocument optional and updated related methods to support this.

to commit the new content to the CHANGELOG.md file, please type:
'/update_changelog --pr_update_changelog.push_changelog_changes=true'

[CodiumAI-Agent]

Changelog updates: 🔄

2025-01-08

Changed

• Made the source parameter of GraphDocument optional and updated related methods to support this.

to commit the new content to the CHANGELOG.md file, please type:
'/update_changelog --pr_update_changelog.push_changelog_changes=true'