text: module.exports = {
    Transform: require('./lib/images/image_transform'),
    QRCode: require('./lib/images/image_QRCode'),
    Annotate: require('./lib/images/image_annotate'),
    Composite: require('./lib/images/image_composite'),
    Constant: require('./lib/images/image_constant'),
    Service: require('./lib/image_service')
  }
  