protected AttributedNode GetParentMember(Location start, Location end)
		{
			using (IParser parser = ParserFactory.CreateParser(SupportedLanguage.CSharp, new StringReader(this.currentDocument.Text))) {
				parser.Parse();
				
				if (parser.Errors.Count > 0) {
					MessageService.ShowException(null, parser.Errors.ErrorOutput);
					return null;
				}
				
				FindMemberVisitor fmv = new FindMemberVisitor(start, end);
				
				parser.CompilationUnit.AcceptVisitor(fmv, null);
				
				return fmv.Member;
			}
		}
		protected ParametrizedNode GetParentMember(int startLine, int startColumn, int endLine, int endColumn)
		{
			using (IParser parser = ParserFactory.CreateParser(SupportedLanguage.CSharp, new StringReader(this.currentDocument.TextContent))) {
				parser.Parse();
				
				if (parser.Errors.Count > 0) {
					MessageService.ShowError(null, parser.Errors.ErrorOutput);
					return null;
				}
				
				FindMemberVisitor fmv = new FindMemberVisitor(startColumn, startLine, endColumn, endLine);
				
				parser.CompilationUnit.AcceptVisitor(fmv, null);
				
				return fmv.Member;
			}
		}