class SchemaRegistry:
    def __init__(self):
        self._schemas = {}
        self._templates = {}

    def register_schema(self, name: str, schema: dict) -> None:
        self._schemas[name] = schema

    def get_schema(self, name: str) -> dict:
        return self._schemas.get(name, {})

    def register_template(self, template_id: str, definition: dict) -> None:
        self._templates[template_id] = definition

    def get_template(self, template_id: str) -> dict:
        return self._templates.get(template_id, {})


class ExperimentTemplate:
    def __init__(self, template_id: str, name: str, definition: dict):
        self.template_id = template_id
        self.name = name
        self.definition = definition