This is how I am creating my data table. Just including a snippet below. 

 link_wfc_core_stats_data = 
google.visualization.arrayToDataTable(dataArray); 
calculatePercentagesWithGlobalFactor(link_wfc_core_stats_data,PIPELINE_LINK_ALL);
var link_wfc_core_stats_table = new 
google.visualization.Table(document.getElementById('link_wfc_core_stats_table'));
 
link_wfc_core_stats_table.draw(link_wfc_core_stats_data, table_options);

However, once the table is ready, when I try to use the table as - 
link_wfc_core_stats_table.getNumberOfColumns() - I get an error saying that 
the method getNumberOfColumns does not exist.

Why is that? 

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