/// <summary>
/// Gets either cached value or gets value and caches for future.
/// </summary>
/// <param name="objType">use object.GetType()</param>
/// <returns>version number</returns>
/// <exception cref="ArgumentException">if object does not have version attribute</exception>
public static VersionNumbers GetVersion(Type objType)
{
VersionNumbers versionNo;
if (TypeVersionCache.TryGetValue(objType, out versionNo))
{
return(versionNo);
}
versionNo = BuildVersionCache(objType);
return(versionNo);
}
