Open Browser keyword options argument does not support parsing complex structures.

I’m attempting to launch chromedriver in a mobile view using the new mobile emulation flag. When I attempt to use it as an option for the open browser keyword, I am getting an error stating that too many args are passed.

*** Test Case ***
open browser in mobile view
     ${mobileDev}=  Create dictionary  deviceName  Galaxy S5
     open browser  www.google.com  browser=chrome 
 options=add_experimental_option("mobileEmulation", ${mobileDev})

Error returned TypeError: add_experimental_option() takes exactly 3 arguments (4 given)

[HelioGuilherme66]

In use the following code and it works:

*** Keywords ***
Chrome Mobile Go To URL
    [Arguments]    ${url}    ${mobile}=Galaxy S5
    [Documentation]    Starts a Chrome Browser in Mobile Emulation with specified device model
    ${options}=    Evaluate    sys.modules['selenium.webdriver'].ChromeOptions()    sys
    Create webDriver    Chrome    chrome_options=${options}
    &{mobile_emulation}=    Create Dictionary    deviceName=${mobile}
    Call Method    ${options}    add_experimental_option    mobileEmulation    ${mobile_emulation}
    Create Webdriver    Chrome    chrome_options=${options}
    GoTo    ${url}

[jsellers180]

@HelioGuilherme66 @aaltat thanks! I’ll implement the workaround for now but it would be cool to have the open browser keyword support the complex types.