<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def coerce(self, value, **kwargs):
 """Coerces the value to the proper type."""


        if value is None:
            return None
        return self._coercion.coerce(value, **kwargs)