func (g *Graph) Adjacence(key int) []*Vertex {
	v := g.GetVertex(key)

	if v != nil {
		return v.Adjacencies
	}

	return nil
}
// Adjacence returns vertices adjacent to key
Adjacence returns vertices adjacent to key
// Adjacence returns vertices adjacent to key
func (g *Graph) Adjacence(key int) []*Vertex {
	v := g.GetVertex(key)
	if v != nil {
		return v.Adjacencies
	}
	return nil
}
func ( g * Graph ) Adjacence ( key int ) [ ] * Vertex { v := g . GetVertex ( key ) if v != nil { return v . Adjacencies } return nil }
Adjacence returns vertices adjacent to key
Adjacence returns vertices adjacent to key