def get_field_deserializers(self,) -> dict[str, Callable[[ParseNode], None]]:
        """
        The deserialization information for the current model
        Returns: dict[str, Callable[[ParseNode], None]]
        """
        from .access_package_assignment_request_workflow_extension import AccessPackageAssignmentRequestWorkflowExtension
        from .access_package_assignment_workflow_extension import AccessPackageAssignmentWorkflowExtension
        from .custom_authentication_extension import CustomAuthenticationExtension
        from .custom_extension_authentication_configuration import CustomExtensionAuthenticationConfiguration
        from .custom_extension_client_configuration import CustomExtensionClientConfiguration
        from .custom_extension_endpoint_configuration import CustomExtensionEndpointConfiguration
        from .entity import Entity
        from .identity_governance.custom_task_extension import CustomTaskExtension
        from .on_attribute_collection_start_custom_extension import OnAttributeCollectionStartCustomExtension
        from .on_attribute_collection_submit_custom_extension import OnAttributeCollectionSubmitCustomExtension
        from .on_token_issuance_start_custom_extension import OnTokenIssuanceStartCustomExtension

        from .access_package_assignment_request_workflow_extension import AccessPackageAssignmentRequestWorkflowExtension
        from .access_package_assignment_workflow_extension import AccessPackageAssignmentWorkflowExtension
        from .custom_authentication_extension import CustomAuthenticationExtension
        from .custom_extension_authentication_configuration import CustomExtensionAuthenticationConfiguration
        from .custom_extension_client_configuration import CustomExtensionClientConfiguration
        from .custom_extension_endpoint_configuration import CustomExtensionEndpointConfiguration
        from .entity import Entity
        from .identity_governance.custom_task_extension import CustomTaskExtension
        from .on_attribute_collection_start_custom_extension import OnAttributeCollectionStartCustomExtension
        from .on_attribute_collection_submit_custom_extension import OnAttributeCollectionSubmitCustomExtension
        from .on_token_issuance_start_custom_extension import OnTokenIssuanceStartCustomExtension

        fields: dict[str, Callable[[Any], None]] = {
            "authenticationConfiguration": lambda n : setattr(self, 'authentication_configuration', n.get_object_value(CustomExtensionAuthenticationConfiguration)),
            "clientConfiguration": lambda n : setattr(self, 'client_configuration', n.get_object_value(CustomExtensionClientConfiguration)),
            "description": lambda n : setattr(self, 'description', n.get_str_value()),
            "displayName": lambda n : setattr(self, 'display_name', n.get_str_value()),
            "endpointConfiguration": lambda n : setattr(self, 'endpoint_configuration', n.get_object_value(CustomExtensionEndpointConfiguration)),
        }
        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/custom_callout_extension.py