/// <summary>
/// checks if a property with the given name is enclosed
/// by a region with the given name
/// </summary>
/// <param name="classDeclaration"></param>
/// <param name="regionName"></param>
/// <param name="propertyName"></param>
/// <returns>true if there is a property between the region,
/// false otherwise</returns>
public static bool IsPropertyBetweenRegion(
ClassDeclarationSyntax classDeclaration,
string regionName,
string propertyName)
{
// assert: the method must be between the region
// get begin and end region
var beginRegion = classDeclaration.FindRegionByText(regionName);
var endRegion = classDeclaration.FindEndRegion(regionName);
// get all nodes between the regions
var span = new TextSpan(beginRegion.Span.End, endRegion.Span.Start);
var nodesBetweenRegion = classDeclaration.DescendantNodes(span);
// check that a property declaration for a "Name" property is there
var isPropertyBetweenRegion = nodesBetweenRegion
.OfType<PropertyDeclarationSyntax>()
.Any(x => x.Identifier.ToString() == propertyName);
return isPropertyBetweenRegion;
}