code: def _fmt_star_arg(self, arg):
      arg_doc = arg.name
      if arg.annotation:
          annotation = self._fmt_expr(arg.annotation)
          arg_doc = arg_doc + (": %s" % annotation)
      return arg_doc
  
imports: from __future__ import absolute_import, print_function
  from .Visitor import CythonTransform
  from .StringEncoding import EncodedString
  from .None import Options
  from .None import PyrexTypes, ExprNodes
  from ..CodeWriter import ExpressionWriter
label_desc: Use image node_id 4 for calling the EmbedSignature obj's underlying member method code with example usage: obj._fmt_star_arg(arg) and returns: arg_doc