Try-except condition in SQL sever inline R

I've written some R code inline SQL server.

In some instances, the dataframe input to the R statement is empty so I want to create a condition that breaks out of the inline R if the dataframe is empty. See non-working example below:

BEGIN 
DECLARE @inquery nvarchar(max) = N' select distinct Ids from table_name'

EXEC sp_execute_external_script @language = N'R', @script = N'

newdata = InputDataset;

if (nrow(new_data)>=10){print("Continue the modelling")} else {print("break out of the inline R"}'

@input_data_1 = @inquery
END

Question: how do I write the else-statement such that it breaks out of the inline R if the condition is not satisfied.