public WorkItem(DocumentId documentId, string language, InvocationReasons invocationReasons, bool isLowPriority, IAsyncToken asyncToken)
: this(documentId, documentId.ProjectId, language, invocationReasons, isLowPriority, null, ImmutableHashSet.Create <IIncrementalAnalyzer>(), false, asyncToken)
{
}
public DocumentDifferenceResult(InvocationReasons changeType, SyntaxNode changedMember = null)
{
this.ChangeType = changeType;
this.ChangedMember = changedMember;
}