class_docstr: Basic Conv2D + activation + instance norm building block.
code: def forward(self, inp):
      return self.layer(inp)
  
imports: import torch
  from packaging.version import parse
  from torch_complex.tensor import ComplexTensor
  from espnet2.torch_utils.get_layer_from_string import get_layer
label_desc: Use image node_id 2 for calling the Conv2DActNorm obj's underlying member method code with example usage: obj.forward(inp) and returns: self