code: def forward(self, inputs):
      out = self.conv(inputs)
      return out
  
file_path: PaddleDetection/ppdet/modeling/heads/centernet_head.py
imports: import math
  import paddle
  import paddle.nn
  import paddle.nn.functional
  from paddle.nn.initializer import Constant, Uniform
  from ppdet.core.workspace import register
  from ppdet.modeling.losses import CTFocalLoss, GIoULoss
label_desc: Use image node_id 2 for calling the ConvLayer obj's underlying member method code with example usage: obj.forward(inputs) and returns: out