public ThemeManagerInterface::setActiveTheme(ActiveTheme

public ThemeManagerInterface::alterForTheme(ActiveTheme

Provides a high level access to the active theme and methods to use it. Beside the active theme it provides a wrapper around _theme as well

public ThemeManagerInterface::hasActiveTheme()

public ThemeManagerInterface::render($hook, array $variables)

public ThemeManagerInterface::getActiveTheme()

public ThemeManagerInterface::alter($type, &$data,

public ThemeManagerInterface::resetActiveTheme()