class_docstr: Methods in this class recursively traverse an AST and
  output source code for the abstract syntax; original formatting
  is disregarged.
docstr: Handle "import xyz.foo".
          
docstr_tok: ["Handle","``","import","xyz.foo","''","."]
code: def _Import(self, t):
      """Handle "import xyz.foo"."""
      self._fill("import ")
  
      for i, (name, asname) in enumerate(t.names):
          if i != 0:
              self._write(", ")
          self._write(name)
          if asname is not None:
              self._write(" as " + asname)
  
imports: import sys
  from compiler.ast import Const, Name, Tuple, Div, Mul, Sub, Add
label_desc: Use image node_id 29 for calling the UnparseCompilerAst obj's underlying member method code with example usage: obj._Import(t) without return types