whole_func_string: function GetTotalFlexGrow(columns){
    var totalFlexGrow = 0;
  
    for (let c of columns) {
      totalFlexGrow += c.flexGrow || 0;
    }
  
    return totalFlexGrow;
  }
func_code_string: function GetTotalFlexGrow(columns){
    var totalFlexGrow = 0;
  
    for (let c of columns) {
      totalFlexGrow += c.flexGrow || 0;
    }
  
    return totalFlexGrow;
  }
func_documentation_string: Calculates the Total Flex Grow
  @param {array}