A trimmed `dump` of a `Subject` instance.

subject_sump.swift

import Combine

enum SomeError: Error {
	case anError
}

let subject = PassthroughSubject<Int, SomeError>()
subject.send(completion: .failure(.anError))

dump(subject)

/// (1) Trimmed output, take note of the `active` property:
/// ```none
/// ▿ Combine.PassthroughSubject<Swift.Int, __lldb_expr_148.SomeError> #0
/// - active: false
/// …
/// ```