Extract root(start) and leaf(end) states programmatically in monocle2

Dear bioinformaticians,
do you know how to extract starting state and end states from the CDS in monocle2 ?
I know I can detect them visually inspecting the States plot after I compute the pseudotime.
I am asking if there is another way to get terminal state ids because I would like to avoid working interactively in R and streamline the analysis.

Thank you very much for your advice!