Figure out a good place for more `load`-related topics (as placeholders; not written yet)

[Zlatkovsky]

• More about load
  • Comma-separated properties: when it's more than just syntax sugar
  • Getting collection count, or retrieving collection elements, but without any properties
  • Collections: top, skip
  • "Select", "expand", and "*"
  • A recursive load
• Collection access: .getItem(key), vs. .getItemOrNullObject(key), vs. .getItemAt(index) vs. .items[index]
• Array properties & complex types (structs / interfaces)