title: Spreadsheet API : Get cell entry from specific cell address
body: <p>how can I get a <code>CellEntry</code> given a specific cell address e.g in <code>A1</code> notation. For example,</p>
  
  <pre><code>String address = "A1";
  CellEntry cellEntry = getCellEntry(address);
  
  public CellEntry getCellEntry(String address){
  
      //- What can I do inside here
  
  }
  </code></pre>
  
  <p>Previously, I fetch everything using <code>CellFeed</code> and iterating using <code>cellFeed.getEntries</code> to get each CellEntry and filter out based on cell address. But I think it will have a performance issues since my spreadsheet is large. Any idea ? I'm using Java.</p>