code: protected boolean semanticallyEquivalent(BioPAXElement o)
  	{
  		final sequenceFeature that = (sequenceFeature) o;
  		return
  			SetEquivalenceChecker.isEquivalent(this.FEATURE_LOCATION, that.getFEATURE_LOCATION())
  				&&
  				(FEATURE_TYPE != null ? FEATURE_TYPE.isEquivalent(that.getFEATURE_TYPE()) :
  				that.getFEATURE_TYPE() == null);
  	}
docs: --------------------- Interface BioPAXElement ---------------------