return this.source == other.source && this.dest == other.dest;
return this.getSource() == other.getSource() && this.getTarget() == other.getTarget() && this.getType() == other.getType();
	public boolean equals(Object o) {		if (!(o instanceof Edge))			return false;		Edge other = (Edge) o;		return this.source == other.source && this.dest == other.dest;	}