code: public java.lang.Object getSelectedColumn() {
  		return (java.lang.Object) getStateHelper().eval(PropertyKeys.selectedColumn);
  	}
docs: Optional parameter defining which columns are selected when the datatable is initially rendered. If this attribute is an integer, it's the column index. If it's a string, it's a jQuery expression. Automatically sets selection='true' and selected-items='column'. <P>
  @return Returns the value of the attribute, or null, if it hasn't been set by the JSF file.