@Override
	protected void dispose() {

		startAddressToPixel.clear();
		endAddressToPixel.clear();
		layoutToPixel = null;
		flowArrows.clear();
		flowArrowPanel.dispose();

		codeViewerService.removeMarginProvider(this);
	}
Those arrows that start at the current address
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/flowarrow/FlowArrowPlugin.java