'Creates breadcrumbs for the first `num_units`
Arguments:
num_units(int): Number of units for which we want to create breadcrumbs
Returns:
list of breadcrumbs'

def _breadcrumb(self, num_units, modified_name=None):

    breadcrumbs = []
    for index in range(num_units):
        breadcrumbs.append(['TestSection{}'.format(index), 'TestSubsection{}'.format(index), (modified_name if modified_name else 'TestVertical{}'.format(index))])
    return breadcrumbs
