<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def initial_sql(self, value):
 """Set the connection's initial_sql property. Args: value: New initial_sql value. String. Returns: Nothing. """


        self._initial_sql = value
        # If initial_sql is None we remove the element and don't write it to XML
        if value is None:
            try:
                del self._connectionXML.attrib['one-time-sql']
            except KeyError:
                pass
        else:
            self._connectionXML.set('one-time-sql', value)