class_docstr: Methods in this class recursively traverse an AST and
  output source code for the abstract syntax; original formatting
  is disregarged.
docstr: Indent a piece of text, according to the current indentation level
docstr_tok: ["Indent","a","piece","of","text",",","according","to","the","current","indentation","level"]
code: def _fill(self, text=""):
      "Indent a piece of text, according to the current indentation level"
      if self._do_indent:
          self._write("\n" + "    " * self._indent + text)
      else:
          self._write(text)
  
imports: import sys
  from compiler.ast import Const, Name, Tuple, Div, Mul, Sub, Add
label_desc: Use image node_id 2 for calling the UnparseCompilerAst obj's underlying member method code with example usage: obj._fill(text) without return types