code: def add_dependency(self, dep, modifier="static"):
      self.prepend_code_line(f"using {modifier} {dep};")
  
file_path: m2cgen/m2cgen/interpreters/c_sharp/code_generator.py
imports: from contextlib import contextmanager
  from m2cgen.interpreters.code_generator import CLikeCodeGenerator
label_desc: Use image node_id 9 for calling the CSharpCodeGenerator obj's underlying member method code with example usage: obj.add_dependency(dep, modifier) without return types