def __init__(self, mimetype='text/plain'):
        self.mimetype = mimetype
Sets up the needed objects used throughout the test.
dataset/ETHPy150Open zalando/connexion/connexion/decorators/produces.py/BaseSerializer.__init__--crossover with--dataset/ETHPy150Open log2timeline/dfvfs/tests/file_io/compressed_stream_io.py/ZlibCompressedStreamTest.setUp