Constant lsp_types::error_codes::CONTENT_MODIFIED

pub const CONTENT_MODIFIED: i64 = -32801;

The server detected that the content of a document got modified outside normal conditions. A server should NOT send this error code if it detects a content change in it unprocessed messages. The result even computed on an older state might still be useful for the client.

If a client decides that a result is not of any use anymore the client should cancel the request.