super(identifier, PreCompiledHeader.class);
    }

    @Internal
    public File getObjectFile() {
        return pchObjects == null ? null : pchObjects.getSingleFile();
    }

    public void setPchObjects(FileCollection pchObjects) {
        this.pchObjects = pchObjects;
    }

    @IgnoreEmptyDirectories
    @PathSensitive(PathSensitivity.ABSOLUTE)
    @InputFiles
    public FileCollection getPchObjects() {

        PreCompiledHeader pch = binary.getPrefixFileToPCH().get(sourceSet.getPrefixHeaderFile());
        pch.setPchObjects(task.getOutputs().getFiles().getAsFileTree().matching(new PatternSet().include("**/*.pch", "**/*.gch")));
        pch.builtBy(task);
    }