In order to improve graph network elevation, it is often needed to insert a graph node to an existing graph segment.
ce<SPAN class="punctuation token">.</SPAN>addGraphNodeToGraphSegment<SPAN class="punctuation token">(</SPAN> myGraphSegment<SPAN class="punctuation token">,</SPAN> <SPAN class="punctuation token">(</SPAN> x<SPAN class="punctuation token">,</SPAN> y<SPAN class="punctuation token">,</SPAN> z <SPAN class="punctuation token">)</SPAN> <SPAN class="punctuation token">)</SPAN>
ce<SPAN class="punctuation token">.</SPAN>deleteGraphNodeFromGraphSegment<SPAN class="punctuation token">(</SPAN> myGraphSegment<SPAN class="punctuation token">,</SPAN> myGraphNode <SPAN class="punctuation token">)</SPAN>
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