code: def __init__(self):
      super().__init__(SymbolicExpression)
  
imports: import re
  from sympy.core import S
  from sympy.core.numbers import Integer
  from sympy.printing.cxx import CXX11CodePrinter
  from hls4ml.backends.template import FunctionCallTemplate, LayerConfigTemplate
  from hls4ml.model.layers import SymbolicExpression
label_desc: Use image node_id 1 to create a new ExpressionConfigTemplate object from inherited base classes: LayerConfigTemplate with example: obj = ExpressionConfigTemplate()