/// <summary>
/// Creates a branch of the solution that has its compilations frozen in whatever state they are in at the time, assuming a background compiler is
/// busy building this compilations.
///
/// A compilation for the project containing the specified document id will be guaranteed to exist with at least the syntax tree for the document.
///
/// This not intended to be the public API, use Document.WithFrozenPartialSemantics() instead.
/// </summary>
internal Solution WithFrozenPartialCompilationIncludingSpecificDocument(DocumentId documentId, CancellationToken cancellationToken)
{
var newState = _state.WithFrozenPartialCompilationIncludingSpecificDocument(documentId, cancellationToken);
return(new Solution(newState));
}