Ash.Query.calculate
You're seeing just the function
calculate, go back to Ash.Query module for more information.
Adds a calculation to the query.
Calculations are made available on the calculations field of the records returned
The module_and_opts argument accepts either a module or a {module, opts}. For more information
on what that module should look like, see Ash.Calculation.
More features for calculations, like passing anonymous functions, will be supported in the future.