pub fn column_groups(mut self, input: crate::model::ColumnGroup) -> Self {
            let mut v = self.column_groups.unwrap_or_default();
            v.push(input);
            self.column_groups = Some(v);
            self
        }
/// Appends an item to `column_groups`.
///
/// To override the contents of this collection use [`set_column_groups`](Self::set_column_groups).
///
/// <p>Groupings of columns that work together in certain Amazon QuickSight features. Currently, only geospatial hierarchy is supported.</p>
Appends an item to `column_groups`.
To override the contents of this collection use [`set_column_groups`](Self::set_column_groups).

Groupings of columns that work together in certain Amazon QuickSight features. Currently, only geospatial hierarchy is supported.
Appends an item to ` column_groups ` . To override the contents of this collection use [ ` set_column_groups ` ] ( Self :: set_column_groups ) . Groupings of columns that work together in certain Amazon QuickSight features . Currently only geospatial hierarchy is supported .
pub fn column_groups(mut self, input: crate::model::ColumnGroup) -> Self {
            let mut v = self.column_groups.unwrap_or_default();
            v.push(input);
            self.column_groups = Some(v);
            self
        }
pub fn column_groups ( mut self , input : crate :: model :: ColumnGroup ) -> Self { let mut v = self . column_groups . unwrap_or_default ( ) ; v . push ( input ) ; self . column_groups = Some ( v ) ; self }
Appends an item to `column_groups`.
Appends an item to ` column_groups ` .
mut self
input
crate::model::ColumnGroup
mut self
input
crate::model::ColumnGroup