class_docstr: Basic conv bn relu layer.
class_docstr_tok: ["Basic","conv","bn","relu","layer","."]
code: def forward(self, x: paddle.Tensor) -> paddle.Tensor:
      x = self._conv(x)
      x = self._batch_norm(x)
      x = F.relu(x)
      return x
  
imports: import paddle
  import paddle.nn
  import paddle.nn.functional
  from paddle.nn import AvgPool2D
  from paddle.nn import Conv2D
  from paddle.nn.layer import activation
label_desc: Use image node_id 2 for calling the ConvBNReLU obj's underlying member method code with example usage: obj.forward(x) and returns: x