Sets the position of the group as an index of the tool palette. If position is 0 the group will become the first child, if position is -1 it will become the last child.
a #GtkToolItemGroup which is a child of palette
a new index for group
2.20
See Implementation
Sets the position of the group as an index of the tool palette. If position is 0 the group will become the first child, if position is -1 it will become the last child.