return backupDestinationDir;
    }

    @Override
    public void setClassBackupDir(@Nullable File classBackupDir) {
        this.backupDestinationDir = classBackupDir;
    }

    public void setCompileOptions(CompileOptions compileOptions) {
        this.compileOptions = new MinimalJavaCompileOptions(compileOptions);
    }

    @Override
    public List<File> getAnnotationProcessorPath() {

            }

            spec.setSourceCompatibility(sourceCompatibility);
            spec.setTargetCompatibility(targetCompatibility);
        }
        spec.setCompileOptions(compileOptions);
    }

    private JavaInstallationMetadata getToolchain() {
        return getJavaCompiler().get().getMetadata();
    }

    private File getTemporaryDirWithoutCreating() {

        } else {
            effectiveClasspath = ImmutableList.copyOf(getClasspath());
        }
        spec.setCompileClasspath(effectiveClasspath);
        configureCompatibilityOptions(spec);
        spec.setCompileOptions(getOptions());
        spec.setScalaCompileOptions(new MinimalScalaCompileOptions(scalaCompileOptions));
        spec.setAnnotationProcessorPath(compileOptions.getAnnotationProcessorPath() == null

        spec.setGroovyClasspath(Lists.newArrayList(getGroovyClasspath()));
        spec.setCompileOptions(compileOptions);
        spec.setGroovyCompileOptions(new MinimalGroovyCompileOptions(groovyCompileOptions));
        spec.getCompileOptions().setSupportsCompilerApi(true);
        if (getOptions().isIncremental()) {