<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def _register_unicode(connection):
 """Register the cursor to be able to receive Unicode string. :type connection: psycopg2.extensions.connection :param connection: Where to register things """

        psycopg2.extensions.register_type(psycopg2.extensions.UNICODE,
                                          connection)
        psycopg2.extensions.register_type(psycopg2.extensions.UNICODEARRAY,
                                          connection)