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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 getref():
 """Current default values for graph and component tables, primary area, and wavelength set. .. note:: Also see :func:`setref`. Returns ------- ans : dict Mapping of parameter names to their current values. """

    ans=dict(graphtable=GRAPHTABLE,
             comptable=COMPTABLE,
             thermtable=THERMTABLE,
             area=PRIMARY_AREA,
             waveset=_default_waveset_str)
    return ans