Server to client TextDocumentItem/

I was curious if there were any plans for a server to client mechanism for sending TextDocumentItem's from server to client,
currently which I understand is only used for sending client documents to the server.

As well as a mechanism for specifying a uri for each active lsp presumably the uri could be sent to the client in the serverInfo of a InitializeResult from which a client can then recognize documents from the server inside TextDocumentIdentifiers. And a new request by which clients could retrieve a server document.

The LSP that I am working generates some extremely long diagnostics, unfortunately diagnostics are typically displayed by editors in a fashion which is only suitable for extremely short messages. In these cases of excessively long diagnostics, it would be nice if we could then refer to server generated documents via their URL in via the relatedDocuments component of the diagnostic.

Start by reviewing the existing TextDocumentItem, InitializeResult, TextDocumentIdentifier, and diagnostic relatedDocuments concepts in the protocol specification. Determine how server-generated documents, per-server URIs, and a client retrieval request should be represented, then define the complete server-to-client flow and its compatibility implications.