CellArea.isFocusSibling

bool isFocusSibling(gtk.cell_renderer.CellRenderer renderer, gtk.cell_renderer.CellRenderer sibling)

Returns whether sibling is one of renderer’s focus siblings (see gtk.cell_area.CellArea.addFocusSibling).

`renderer`	the gtk.cell_renderer.CellRenderer expected to have focus
`sibling`	the gtk.cell_renderer.CellRenderer to check against renderer’s sibling list

true if sibling is a focus sibling of renderer