<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def verify_mfa(self, mfa_token):
 """Verify an SMS or TOTP MFA token for this user. Args: mfa_token (str):
 An alphanumeric code from either a User's TOTP application or sent to them via SMS. Returns: True if the mfa_token is valid, False otherwise. """

        response = self.resource.verify_mfa({'mfa_token': mfa_token})
        return (response['valid'] == True or response['valid'] == 'true')