public void programClosed(Program closedProgram) {
		if (closedProgram == this.program) {
			controller.clear();
			controller.programClosed(closedProgram);
			updateProgram(null, null);
		}
	}
Represents one side of a dual decompiler compare window. It holds the decompiler controller and
related state information for one side.
Ghidra/Features/CodeCompare/src/main/java/ghidra/features/codecompare/decompile/CDisplay.java