def json(self):
        ''' If the ``Content-Type`` header is ``application/json``, this
            property holds the parsed content of the request body. Only requests
            smaller than :attr:`MEMFILE_MAX` are processed to avoid memory
            exhaustion. '''
        ctype = self.environ.get('CONTENT_TYPE', '').lower().split(';')[0]
        if ctype == 'application/json':
            b = self._get_body_string()
            if not b:
                return None
            return json_loads(b)
        return None
If the ``Content-Type`` header is ``application/json``, this
            property holds the parsed content of the request body. Only requests
            smaller than :attr:`MEMFILE_MAX` are processed to avoid memory
            exhaustion.