code: def fix_include(model_code):
      
      pattern = r"(?<=\n)\s*(#include)\s*(\S+)\s*(?=\n)"
      model_code, n = re.subn(pattern, r"\1 \2", model_code)
      if n == 1:
          msg = "Made {} substitution for the model_code"
      else:
          msg = "Made {} substitutions for the model_code"
      logger.info(msg.format(n))
      return model_code
docs: Reformat `model_code` (remove whitespace) around the #include statements.
      
      Note
      ----
          A modified `model_code` is returned.
  
      Parameters
      ----------
      model_code : str
          Model code
  
      Returns
      -------
      str
          Reformatted model code
      
      Example
      -------
          
      >>> from pystan.experimental import fix_include
      >>> model_code = "parameters { #include myfile.stan \n..."
      >>> model_code_reformatted = fix_include(model_code)
      # "parameters {#include myfile.stan\n..."