def _get_text(rootElement, childName):
    element = rootElement.find(childName)
    if element is not None and element.text is not None:
        return element.text
    return ""
wrapper for calling docker methods
dataset/ETHPy150Open boakley/robotframework-workbench/rwb/lib/keywordtable.py/_get_text--crossover with--dataset/ETHPy150Open everware/everware/everware/spawner.py/CustomDockerSpawner._docker