public ProgramDB getPrivateProgram() {
		if (model == null) {
			return null; // initialize was never called
		}
		return model.getPrivateProgram();
	}
Returns private Immutable program.
This represents the local program to be checked-in.
Program returned will be released by the MergeTestFacilitator 
when disposed or re-initialized.
Ghidra/Features/Base/src/test/java/ghidra/program/database/MergeTestFacilitator.java