docstr: Change the install directories pointed by name using root.
code: def change_roots(self, *names):
      """Change the install directories pointed by name using root."""
      for name in names:
          attr = "install_" + name
          setattr(
              self, attr, change_root(self.root, getattr(self, attr))
          )
  
imports: import sys
  import sysconfig
  import os
  import re
  from distutils import log
  from distutils.core import Command
  from distutils.debug import DEBUG
  from distutils.sysconfig import get_config_vars
  from distutils.errors import DistutilsPlatformError
  from distutils.file_util import write_file
  from distutils.util import convert_path, subst_vars, change_root
  from distutils.util import get_platform
  from distutils.errors import DistutilsOptionError
  from site import USER_BASE
  from site import USER_SITE
label_desc: Use image node_id 12 for calling the install obj's underlying member method code with example usage: obj.change_roots() without return types