code: function(iStartIndex) {
  			// check in the sections which where loaded
  			for (var i = 0; i < that._mLoadedSections[sNodeId].length; i++) {
  				var oSection = that._mLoadedSections[sNodeId][i];
  				// try to find i in the loaded sections. If i is within one of the sections it needs not to be loaded again
  				if (iStartIndex >= oSection.startIndex && iStartIndex < oSection.startIndex + oSection.length) {
  					return true;
  				}
  			}
  
  			// check requested sections where we still wait for an answer
  		}
docs: check whether a start index was already requested