_getEdgesOverlappingWith(object, overlappingEdges) {
    const edges = this.body.edges;
    for (let i = 0; i < this.body.edgeIndices.length; i++) {
      const edgeId = this.body.edgeIndices[i];
      if (edges[edgeId].isOverlappingWith(object)) {
        overlappingEdges.push(edgeId);
      }
    }
  }
retrieve all edges overlapping with given object, selector is around center
@param {object} object  An object with parameters left, top, right, bottom
@param {number[]} overlappingEdges An array with id's of the overlapping nodes
@private