parent.insertBefore(element, firstChild)
        }
    }

    public static void addBefore(Node sibling, Closure cl) {
        DomBuilder builder = new DomBuilder(sibling.ownerDocument, null)
        cl.delegate = builder
        cl.call()
        def parent = sibling.parentNode
        builder.elements.each { element ->
            parent.insertBefore(element, sibling)
        }
    }

from client_grants import ClientGrantsCredentialProvider

boto3.set_stream_logger('boto3.resources', logging.DEBUG)

bc_session = get_session()
bc_session.get_component('credential_provider').insert_before(
    'env',
    ClientGrantsCredentialProvider('NZLOOFRSluw9RfIkuHGqfk1HFp4a',
                                   '0Z4VTG8uJBSekn42HE40DK9vQb4a'),
)

boto3_session = Session(botocore_session=bc_session)