how to copy a feature class from sde to file geodatabase

I need to copy a feature class that participates in a geometric network from SDE into a file geodatabase. I do not want the objects related to the feature class to be copied. I also don't want to copy all the feature classes that participate in the geometric network. If possible, I need to preserve the object ids on the features. I can do this using arc toolbox and the 'feature class to feature class' tool along with a field map that preserves the original object ids. I'm looking for a way to do this in arc objects.