def build_proxy(self, element_class, index_class=None):
        if not index_class:
            index_class = self.default_index
        return self.factory.build_element_proxy(element_class, index_class)
test that an error is raised when maximum string length exceeded
dataset/ETHPy150Open espeed/bulbs/bulbs/base/graph.py/Graph.build_proxy--crossover with--dataset/ETHPy150Open cloudera/hue/desktop/core/ext-py/cx_Oracle-5.1.2/test/StringVar.py/TestStringVar.testStringMaximumReached