Is it possible to define a "global" argument value for a context in behat.yml?

behat.yml

default:

    autoload:
        '': %paths.base%/Tests/Functionals/Bootstrap

    contexts:
        - HttpContext:
            baseUrl: 'http://foo.bar.lan'

    suites:
        errors:
            paths:    [ %paths.base%/Tests/Functionals/Features/Api/Errors ]
            contexts: [ HttpContext, UiContext ]

        accessControl:
            paths:    [ %paths.base%/Tests/Functionals/Features/Api/AccessControl.feature ]
            contexts: [ HttpContext ]

        status:
            paths:    [ %paths.base%/Tests/Functionals/Features/Api/Status.feature ]
            contexts: [ HttpContext, UiContext ]

Solution is using yaml alias, thanks to @everzet for the tip:

aliases:
    - &HttpContext
        - HttpContext:
            baseUrl: 'http://foo.bar.lan'

default:

    autoload:
        '': %paths.base%/Tests/Functionals/Bootstrap

    suites:
        errors:
            paths:    [ %paths.base%/Tests/Functionals/Features/Api/Errors ]
            contexts:
                *HttpContext

        accessControl:
            paths:    [ %paths.base%/Tests/Functionals/Features/Api/AccessControl.feature ]
            contexts:
                *HttpContext

        status:
            paths:    [ %paths.base%/Tests/Functionals/Features/Api/Status.feature ]
            contexts:
                *HttpContext

For more information about alias in yaml, see here