private void initializeEdgePriorities() {
		// initialize priorities based on the order they were defined
		for (String edgeType : graphType.getEdgeTypes()) {
			edgePriorityMap.put(edgeType, edgePriorityMap.size());
		}
	}
Constructs a new GraphTypeDisplayOptions for the given {@link GraphType} and initializes
from tool options. Note this form should only be used for display options on
{@link GraphType}s that have options registered in the tool.
@param graphType The {@link GraphType} for which to define display options
@param tool the tool from which to initialize from {@link ToolOptions}
@param help the help location
Ghidra/Framework/Graph/src/main/java/ghidra/service/graph/GraphDisplayOptions.java