protected void AddDocument(HostProject hostProject, string filePath, string relativeFilePath)
{
ProjectSnapshotManagerDispatcher.AssertDispatcherThread();
if (_currentDocuments.ContainsKey(filePath))
{
return;
}
var hostDocument = new HostDocument(filePath, relativeFilePath);
_projectSnapshotManager.DocumentAdded(hostProject, hostDocument, new FileTextLoader(filePath, defaultEncoding: null));
_currentDocuments[filePath] = hostDocument;
}