langchain/chains/api/openapi/chain.py/OpenAPIEndpointChain/_construct_path
class OpenAPIEndpointChain:    def _construct_path(self, args: Dict[str, str]) -> str:
        """Construct the path from the deserialized input."""
        path = self.api_operation.base_url + self.api_operation.path
        for param in self.param_mapping.path_params:
            path = path.replace(f"{{{param}}}", str(args.pop(param, "")))
        return path