old_contents: from .dcn import (DeformConv, DeformRoIPooling, DeformRoIPoolingPack,
                    ModulatedDeformRoIPoolingPack, ModulatedDeformConv,
                    ModulatedDeformConvPack, deform_conv, modulated_deform_conv,
                    deform_roi_pooling)
  from .nms import nms, soft_nms
  from .roi_align import RoIAlign, roi_align
  from .roi_pool import RoIPool, roi_pool
  
  __all__ = [
      'nms', 'soft_nms', 'RoIAlign', 'roi_align', 'RoIPool', 'roi_pool',
      'DeformConv', 'DeformRoIPooling', 'DeformRoIPoolingPack',
      'ModulatedDeformRoIPoolingPack', 'ModulatedDeformConv',
      'ModulatedDeformConvPack', 'deform_conv', 'modulated_deform_conv',
      'deform_roi_pooling'
  ]
  
new_contents: from .dcn import (DeformConv, DeformConvPack, ModulatedDeformConv,
                    ModulatedDeformConvPack, DeformRoIPooling,
                    DeformRoIPoolingPack, ModulatedDeformRoIPoolingPack,
                    deform_conv, modulated_deform_conv, deform_roi_pooling)
  from .nms import nms, soft_nms
  from .roi_align import RoIAlign, roi_align
  from .roi_pool import RoIPool, roi_pool
  
  __all__ = [
      'nms', 'soft_nms', 'RoIAlign', 'roi_align', 'RoIPool', 'roi_pool',
      'DeformConv', 'DeformConvPack', 'DeformRoIPooling', 'DeformRoIPoolingPack',
      'ModulatedDeformRoIPoolingPack', 'ModulatedDeformConv',
      'ModulatedDeformConvPack', 'deform_conv', 'modulated_deform_conv',
      'deform_roi_pooling'
  ]
  
subject: update imports