SCADomain.newInstance() processes all composites in the contribution irrespective of the parameter passed

I have two composites, namely "proper.composite" and "error.composite", in my test project. "proper.composite" is used to test proper contribution without any errors whereas "error.composite" is used to test a problematic contribution. But when I initialize a domain using SCADomain. newInstance("proper.composite"), I am getting an exception due to "error.composite". Though it looks as if the call SCADomain. newInstance("proper.composite") processes only "proper.composite", in reality it is processing all the .composite files present in the project irrespective of the parameter passed to SCADomain.newInstance().