Which loss functions does h2o.gbm use by default?

the GBM implementation of the h2o package only allows the user to specify a loss function via the distribution argument, which defaults to multinomial for categorical response variables and gaussian for numerical response variables. According to the documentation, the loss functions are implied by the distributions. But I need to know which loss functions are used, and I can't find that anywhere in the documentation. I'm guessing it's the MSE for gaussian and cross-entropy for multinomial - does anybody here know if I'm right?