code: public int strId2Idx(Map fmap) {
  	Integer idxInt = (Integer)fmap.get(strId);
  	if (idxInt != null) {
  	    this.idx = idxInt.intValue();
  	}
  	
  	return this.idx;
      }
docs: Str id2 idx.
  
  @param fmap the fmap
  @return the int