this.outputFileSuffix = outputFileSuffix;
    }

    @Override
    public WorkResult execute(T spec) {
        boolean didRemove = deleteOutputsForRemovedSources(spec);
        boolean didCompile = compileSources(spec);
        return WorkResults.didWork(didRemove || didCompile);
    }

    private boolean compileSources(T spec) {

    }

    @Override
    public WorkResult execute(SwiftCompileSpec spec) {
        final boolean didRemove;
        if (spec.isIncrementalCompile()) {
            didRemove = deleteOutputsForRemovedSources(spec);
        } else {
            didRemove = cleanPreviousOutputs(spec);
        }

        WorkResult compileResult = compile(spec);