code: public FKeyModel getFkey(String fkeyName) {
  		if (fkeyConstraints == null)
  			return null;
  		for (FKeyModel fkey : fkeyConstraints)
  			if (!StrUtils.isEmpty(fkeyName) && fkeyName.equalsIgnoreCase(fkey.getFkeyName()))
  				return fkey;
  		return null;
  	}
docs: Get a FKeyModel by given fkeyName