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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 add_toolkit(topology, location):
 """Add an SPL toolkit to a topology. Args: topology(Topology):
 Topology to include toolkit in. location(str):
 Location of the toolkit directory. """

    import streamsx.topology.topology
    assert isinstance(topology, streamsx.topology.topology.Topology)
    tkinfo = dict()
    tkinfo['root'] = os.path.abspath(location)
    topology.graph._spl_toolkits.append(tkinfo)