aer doc                     # List all namespaces
aer doc System              # List all classes/interfaces/enums in System namespace
aer doc System.String       # Show class details and methods
aer doc System.String.split # Show method signature
aer doc --all               # List all methods (Namespace.Class.Method format)
aer doc --path ./src        # Include user classes from directory
aer doc MyClass --path ./src # Show details for user-defined class

aer doc [namespace|namespace.class|namespace.class.method] [flags]

      --all                   List all methods
  -h, --help                  help for doc
      --package strings       package files to load (can be specified multiple times)
      --package-dir strings   directories containing .pkg files to load (can be specified multiple times)
      --path strings          directories containing Apex classes to load (can be specified multiple times)

  -q, --quiet     suppress progress output
  -v, --verbose   enable verbose output