@Override
	public boolean equals(Object obj) {
		if (this == obj) {
			return true;
		}
		if (obj == null) {
			return false;
		}
		if (getClass() != obj.getClass()) {
			return false;
		}

		FunctionEdge other = (FunctionEdge) obj;
		if (!Objects.equals(end, other.end)) {
			return false;
		}

		if (!Objects.equals(start, other.start)) {
			return false;
		}
		return true;
	}
An edge between two functions.  This edge is never added to the graph, but exists for us
to maintain relationships between functions outside of the visual graph.
Ghidra/Features/GraphFunctionCalls/src/main/java/functioncalls/plugin/FunctionEdge.java