code: public SDVariable conv3d(SDVariable[] inputs, Conv3DConfig conv3DConfig) {
          Conv3D conv3D = Conv3D.builder()
                  .inputFunctions(inputs)
                  .conv3DConfig(conv3DConfig)
                  .sameDiff(sameDiff())
                  .build();
  
          val outputVars = conv3D.outputVariables();
          return outputVars[0];
      }
docs: Conv3d operation.
  
  @param inputs       the inputs to conv3d
  @param conv3DConfig the configuration
  @return