public boolean startsAt(GridPoint p) {
		return points.get(pointIndex).equals(p);
	}
Returns true if this segment starts at the given point. 
@param p the grid point to check
@return true if this segment starts at the given point
Ghidra/Features/FunctionGraph/src/main/java/ghidra/app/plugin/core/functiongraph/graph/layout/flowchart/EdgeSegment.java