ss="hljs-params">(d)</span> {</span> <span class="hljs-keyword">return</span> d.y1; })
            .attr(<span class="hljs-string">'x2'</span>, <span class="hljs-function"><span class="hljs-keyword">function</span> <span class="hljs-params">(d)</span> {</span> <span class="hljs-keyword">return</span> d.x2; })
            .attr(<span class="hljs-string">'y2'</span>, <span class="hljs-function"><span class="hljs-keyword">function</span> <span class="hljs-params">(d)</span> {</span> <span class="hljs-keyword">