'Build list of fields with high perm level and all the higher perm levels defined.'

def get_high_permlevel_fields(self):

    if (not hasattr(self, u'high_permlevel_fields')):
        self.high_permlevel_fields = []
        for df in self.fields:
            if (df.permlevel > 0):
                self.high_permlevel_fields.append(df)
    return self.high_permlevel_fields
