code: public boolean isIsologous() {
  		double scoreInverse = this.getContactOverlapScore(this, true);
  		logger.debug("Interface {} contact overlap score with itself inverted: {}",
  				getId(), scoreInverse);
  		return (scoreInverse>SELF_SCORE_FOR_ISOLOGOUS);
  	}
docs: Tell whether the interface is isologous, i.e. it is formed
  by the same patches of same Compound on both sides.
  
  @return true if isologous, false if heterologous