instances | dynamic_lookup.swift:15:1:15:3 | .foo(_:) | DynamicMemberRefExpr | getBase: | dynamic_lookup.swift:15:1:15:1 | OpaqueValueExpr | | dynamic_lookup.swift:16:5:16:9 | subscript ...[...] | DynamicSubscriptExpr | getBase: | dynamic_lookup.swift:16:5:16:5 | OpaqueValueExpr | getType | dynamic_lookup.swift:15:1:15:3 | .foo(_:) | ((Int) -> ())? | | dynamic_lookup.swift:16:5:16:9 | subscript ...[...] | Int? | getMember | dynamic_lookup.swift:15:1:15:3 | .foo(_:) | dynamic_lookup.swift:6:9:6:28 | foo(_:) | | dynamic_lookup.swift:16:5:16:9 | subscript ...[...] | dynamic_lookup.swift:7:9:9:3 | subscript ... |