method_user and the example on the KBAL

[BERENZ]

The example for the KBAL includes the following lines

    if (is_not_null(focal))
      treat <- as.numeric(treat == focal)
    else
      stop("`estimand` must be \"ATT\" or \"ATC\".", call. = FALSE)

This results in an error message, as the 'is_not_null' function is not exported. Changing it to WeightIt:::is_not_null solves the problem.

[ngreifer]

Thank you so much, I'll make that change in the documentation!

[BERENZ]

You may also change devtools to remotes as it is now suggested way to install packages from GitHub and other repos.