@Override
			public void actionPerformed(ActionContext actionContext) {
				ProgramLocationActionContext programActionContext =
					getProgramActionContext(actionContext);
				clearRegisterValues(programActionContext);
			}
Shows the registers available in a program along with any values that are set.
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/register/RegisterPlugin.java