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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 RetrievePluginAsset(self, plugin_name, asset_name):
 """Return the contents of a given plugin asset. Args: plugin_name: The string name of a plugin. asset_name: The string name of an asset. Returns: The string contents of the plugin asset. Raises: KeyError: If the asset is not available. """

    return plugin_asset_util.RetrieveAsset(self.path, plugin_name, asset_name)