class_docstr: Instance segmentation head for SSD model.
class_docstr_tok: ["Instance","segmentation","head","for","SSD","model","."]
code: def __repr__(self) -> str:
      return (
          "{}(in_channels={}, up_out_channels={}, n_classes={})".format(
              self.__class__.__name__,
              self.in_channels,
              self.inner_channels,
              self.mask_classes,
          )
      )
  
imports: from typing import Optional, Tuple
  import torch
  from torch import Tensor, nn
  from torchvision.ops.roi_align import RoIAlign
  from cvnets.layers import ConvLayer2d, SeparableConv2d, TransposeConvLayer2d
  from cvnets.misc.init_utils import initialize_conv_layer
  from cvnets.modules import BaseModule
label_desc: Use image node_id 2 for calling the SSDInstanceHead obj's underlying member method code with example usage: obj.__repr__() and returns: str