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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:

def get_ipv4_range(start_addr=None, end_addr=None, return_fields=None, **api_opts):
    '''
    Get ip range

    CLI Example:

    .. code-block:: bash

        salt-call infoblox.get_ipv4_range start_addr=123.123.122.12
    '''
    infoblox = _get_infoblox(**api_opts)
    return infoblox.get_range(start_addr, end_addr, return_fields)