public static List<InsertionPoint> GetInsertionPoints (IReadonlyTextDocument data, MonoDevelop.Ide.TypeSystem.ParsedDocument parsedDocument, ITypeSymbol type, int part)
		{
			if (data == null)
				throw new ArgumentNullException (nameof (data));
			if (parsedDocument == null)
				throw new ArgumentNullException (nameof (parsedDocument));
			if (type == null)
				throw new ArgumentNullException (nameof (type));
			if (!type.IsDefinedInSource ())
				throw new ArgumentException ("The given type needs to be defined in source code.", nameof (type));

			// update type from parsed document, since this is always newer.
			//type = parsedDocument.GetInnermostTypeDefinition (type.GetLocation ()) ?? type;
			//var realStartLocation = data.OffsetToLocation (offset);
			var model = parsedDocument.GetAst<SemanticModel> ();
			return GetInsertionPoints (data, model, type, part);
		}
		public static List<InsertionPoint> GetInsertionPoints (IReadonlyTextDocument data, MonoDevelop.Ide.TypeSystem.ParsedDocument parsedDocument, ITypeSymbol type, int part)
		{
			if (data == null)
				throw new ArgumentNullException (nameof (data));
			if (parsedDocument == null)
				throw new ArgumentNullException (nameof (parsedDocument));
			if (type == null)
				throw new ArgumentNullException (nameof (type));
			if (!type.IsDefinedInSource ())
				throw new ArgumentException ("The given type needs to be defined in source code.", nameof (type));

			// update type from parsed document, since this is always newer.
			//type = parsedDocument.GetInnermostTypeDefinition (type.GetLocation ()) ?? type;
			List<InsertionPoint> result = new List<InsertionPoint> ();
			//var realStartLocation = data.OffsetToLocation (offset);
			var model = parsedDocument.GetAst<SemanticModel> ();
			type = model.GetEnclosingNamedType (part, default(CancellationToken)) as ITypeSymbol ?? type;
			var sourceSpan = new TextSpan (part, 0);

			var filePath = data.FileName;
			var declaringType = type.DeclaringSyntaxReferences.FirstOrDefault (dsr => dsr.SyntaxTree.FilePath == filePath && dsr.Span.Contains (sourceSpan)) ?? type.DeclaringSyntaxReferences.FirstOrDefault ();
			if (declaringType == null)
				return result;
			var openBraceToken = declaringType.GetSyntax ().ChildTokens ().FirstOrDefault (t => t.IsKind (SyntaxKind.OpenBraceToken));
			if (!openBraceToken.IsMissing) {
				var domLocation = data.OffsetToLocation (openBraceToken.SpanStart);
				result.Add (GetInsertionPosition (data, domLocation.Line, domLocation.Column));
				//			result.Add (GetInsertionPosition (data, realStartLocation.Line, realStartLocation.Column));
				result [0].LineBefore = NewLineInsertion.None;
			}
			foreach (var member in type.GetMembers ()) {
				if (member.IsImplicitlyDeclared || !member.IsDefinedInSource())
					continue;
				//var domLocation = member.BodyRegion.End;
				foreach (var loc in member.DeclaringSyntaxReferences) {
					if (loc.SyntaxTree.FilePath != declaringType.SyntaxTree.FilePath || !declaringType.Span.Contains (sourceSpan))
						continue;
					var domLocation = data.OffsetToLocation (loc.Span.End);

					if (domLocation.Line <= 0) {
						var lineSegment = data.GetLineByOffset (loc.Span.Start);
						if (lineSegment == null)
							continue;
						domLocation = new DocumentLocation (lineSegment.LineNumber, lineSegment.Length + 1);
					}
					result.Add (GetInsertionPosition (data, domLocation.Line, domLocation.Column));
					break;
				}
			}

			result [result.Count - 1].LineAfter = NewLineInsertion.None;
			CheckStartPoint (data, result [0], result.Count == 1);
			if (result.Count > 1) {
				result.RemoveAt (result.Count - 1); 
				NewLineInsertion insertLine;
				var typeSyntaxReference = type.DeclaringSyntaxReferences.FirstOrDefault (r => r.Span.Contains (sourceSpan));

				var lineBefore = data.GetLineByOffset (typeSyntaxReference.Span.End).PreviousLine;
				if (lineBefore != null && lineBefore.Length == lineBefore.GetIndentation (data).Length) {
					insertLine = NewLineInsertion.None;
				} else {
					insertLine = NewLineInsertion.Eol;
				}
				// search for line start
				var line = data.GetLineByOffset (typeSyntaxReference.Span.End);
				int col = typeSyntaxReference.Span.End - line.Offset;
				if (line != null) {
					var lineOffset = line.Offset;
					col = Math.Min (line.Length, col);
					while (lineOffset + col - 2 >= 0 && col > 1 && char.IsWhiteSpace (data.GetCharAt (lineOffset + col - 2)))
						col--;
				}
				result.Add (new InsertionPoint (new DocumentLocation (line.LineNumber, col), insertLine, NewLineInsertion.Eol));
				CheckEndPoint (data, result [result.Count - 1], result.Count == 1);
			}

//			foreach (var region in parsedDocument.UserRegions.Where (r => type.BodyRegion.IsInside (r.Region.Begin))) {
//				result.Add (new InsertionPoint (new DocumentLocation (region.Region.BeginLine + 1, 1), NewLineInsertion.Eol, NewLineInsertion.Eol));
//				result.Add (new InsertionPoint (new DocumentLocation (region.Region.EndLine, 1), NewLineInsertion.Eol, NewLineInsertion.Eol));
//				result.Add (new InsertionPoint (new DocumentLocation (region.Region.EndLine + 1, 1), NewLineInsertion.Eol, NewLineInsertion.Eol));
//			}
			result.Sort ((left, right) => left.Location.CompareTo (right.Location));
			//foreach (var res in result)
			//	Console.WriteLine (res);
			return result;
		}