def set_messenger_theme(self, theme="<STR_LIT:default>", location="<STR_LIT:default>",<EOL>max_messages="<STR_LIT:default>"):
if not theme:<EOL><INDENT>theme = "<STR_LIT:default>"  <EOL><DEDENT>if not location:<EOL><INDENT>location = "<STR_LIT:default>"  <EOL><DEDENT>if not max_messages:<EOL><INDENT>max_messages = "<STR_LIT:default>"  <EOL><DEDENT>js_utils.set_messenger_theme(<EOL>self.driver, theme=theme,<EOL>location=location, max_messages=max_messages)<EOL>
Sets a theme for posting messages.
            Themes: ["flat", "future", "block", "air", "ice"]
            Locations: ["top_left", "top_center", "top_right",
                        "bottom_left", "bottom_center", "bottom_right"]
            max_messages is the limit of concurrent messages to display.