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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 graphHasField(self, graph_name, field_name):
 """Return true if graph with name graph_name has field with name field_name. @param graph_name: Graph Name @param field_name: Field Name. @return: Boolean """

        graph = self._graphDict.get(graph_name, True)
        return graph.hasField(field_name)