def get_field_deserializers(self,) -> dict[str, Callable[[ParseNode], None]]:
        """
        The deserialization information for the current model
        Returns: dict[str, Callable[[ParseNode], None]]
        """
        from .custom_authentication_extension import CustomAuthenticationExtension
        from .on_token_issuance_start_return_claim import OnTokenIssuanceStartReturnClaim

        from .custom_authentication_extension import CustomAuthenticationExtension
        from .on_token_issuance_start_return_claim import OnTokenIssuanceStartReturnClaim

        fields: dict[str, Callable[[Any], None]] = {
            "claimsForTokenConfiguration": lambda n : setattr(self, 'claims_for_token_configuration', n.get_collection_of_object_values(OnTokenIssuanceStartReturnClaim)),
        }
        super_fields = super().get_field_deserializers()
        fields.update(super_fields)
        return fields

        The deserialization information for the current model
        Returns: dict[str, Callable[[ParseNode], None]]
        
msgraph/generated/models/on_token_issuance_start_custom_extension.py