Get a different set

I get different results for this method;PS> [System.Environment] | Get-Member -StaticTypeName: System.EnvironmentName MemberType Definition---- ---------- ----------Equals Method static bool Equals(System.Object objA, System.Object objB)Exit Method static System.Void Exit(int exitCode)ExpandEnvironmentVariables Method static string ExpandEnvironmentVariables(string name)FailFast