code: def format(self, node):
      inp1 = node.get_input_variable(node.inputs[0])
      inp2 = node.get_input_variable(node.inputs[1])
      params = self._default_config_params(node)
      params["n_out"] = 1
      params["n_in"] = inp1.shape[0]
      params["product_type"] = get_backend("vivado").product_type(
          inp1.type.precision, inp2.type.precision
      )
  
      return self.template.format(**params)
  
file_path: hls4ml/hls4ml/backends/vivado/passes/merge_templates.py
imports: from hls4ml.backends.backend import get_backend
  from hls4ml.backends.template import FunctionCallTemplate, LayerConfigTemplate
  from hls4ml.model.layers import Concatenate, Dot, Merge
label_desc: Use image node_id 2 for calling the DotConfigTemplate obj's underlying member method code with example usage: obj.format(node) and returns: self