public UnframedGrpcErrorHandlerBuilder statusMappingFunction(
            UnframedGrpcStatusMappingFunction statusMappingFunction) {
        this.statusMappingFunction = requireNonNull(statusMappingFunction, "statusMappingFunction");
        return this;
    }
Specifies the status mapping function to be used by the error handler.

<p>This function determines how gRPC statuses are mapped to HTTP statuses
in the error response.

@param statusMappingFunction The status mapping function
grpc/src/main/java/com/linecorp/armeria/server/grpc/UnframedGrpcErrorHandlerBuilder.java