How to get the line number where link reference definition is defined?

[LastDragon-ru]

I want to update link references in markdown, until #419 is done, the only way is to replace it in the text. But I cannot find a way how to determine the line where reference is defined :(

• ReferenceInterface doesn't hold this information at all
• Custom block parser seems will break all references

For example, for this document the line is 3.

Paragraph with [link][target].

[target]: https://example.com