class_docstr: A `Composable` representing an SQL value to include in a query.
  
  Usually you will want to include placeholders in the query and pass values
  as `~cursor.execute()` arguments. If however you really really need to
  include a literal value in the query you can use this object.
  
  The string returned by `!as_string()` follows the normal :ref:`adaptation
  rules <python-types-adaptation>` for Python objects.
  
  Example::
  
      >>> s1 = sql.Literal("foo")
      >>> s2 = sql.Literal("ba'r")
      >>> s3 = sql.Literal(42)
      >>> print(sql.SQL(', ').join([s1, s2, s3]).as_string(conn))
      'foo', 'ba''r', 42
docstr: The object wrapped by the `!Literal`.
docstr_tok: ["The","object","wrapped","by","the","`","!","Literal","`","."]
code: def wrapped(self):
      """The object wrapped by the `!Literal`."""
      return self._wrapped
  
imports: import string
  from psycopg2 import extensions
label_desc: Use image node_id 1 for calling the Literal obj's underlying member method code with example usage: obj.wrapped() and returns: self