def get_string_trace_attribute_rep(trace, trace_attribute):
    """
    Get a representation of the feature name associated to a string trace attribute value

    Parameters
    ------------
    trace
        Trace of the log
    trace_attribute
        Attribute of the trace to consider

    Returns
    ------------
    rep
        Representation of the feature name associated to a string trace attribute value
    """
    if trace_attribute in trace.attributes:
        return 'trace:' + str(trace_attribute) + '@' + str(trace.attributes
            [trace_attribute])
    return 'trace:' + str(trace_attribute) + '@UNDEFINED'
