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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 make_meta_dict_consistent(self):
 """ Remove the possibility of the main keys being undefined. """

        if self.meta_dict is None:
            self.meta_dict = {}

        if "galaxy_info" not in self.meta_dict:
            self.meta_dict["galaxy_info"] = {}

        if "dependencies" not in self.meta_dict:
            self.meta_dict["dependencies"] = []

        if "ansigenome_info" not in self.meta_dict:
            self.meta_dict["ansigenome_info"] = {}