Expand Environment Variables Extension

An extension to expand environment variables within a string

namespace Common.Environment.EnvironmentVariableExtension
{
  public static class StringEnvironmentVariableExtension
  {
    public static string ExpandEnvironmentVariables(this string path)
    {
        Debug.Assert(path != null);
        string result = "";
        result = Environment.ExpandEnvironmentVariables(path);
        return result;
    }
  }
}

and usage

using Common.Environment.EnvironmentVariableExtension;

[Test]
public void ExpandEnvironmentVariablesUsage()
{
    string path = "%Temp%";
    string tempPath = path.ExpandEnvironmentVariables();
}