_getActiveEdges(node) {
    const result = [];

    forEach(node.edges, (edge) => {
      if (this.body.edgeIndices.indexOf(edge.id) !== -1) {
        result.push(edge);
      }
    });

    return result;
  }
Return the active (i.e. visible) edges for this node
@param {Node} node
@returns {Array.<vis.Edge>} Array of edge instances
@private