@Override
	protected void programActivated(Program program) {
		if (connectedProvider != null) {
			connectedProvider.setProgram(program);
		}
	}
Subclass should override this method if it is interested in
program location events.
@param loc location could be null
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/processors/ShowInstructionInfoPlugin.java