protocol AUAudioUnitFactory : NSExtensionRequestHandling, NSObjectProtocol {
    func createAudioUnitWithComponentDescription(_ desc: AudioComponentDescription) throws -> AUAudioUnit
}

protocol AUAudioUnitFactory : NSExtensionRequestHandling {
    func createAudioUnitWithComponentDescription(_ desc: AudioComponentDescription) throws -> AUAudioUnit
}

class AUAudioUnitPreset : NSObject, NSSecureCoding, NSCoding {
    var number: Int
    var name: String
}

class AUAudioUnitPreset : NSObject, NSSecureCoding {
    var number: Int
    var name: String
}

class AUParameter : AUParameterNode, NSSecureCoding, NSCoding {
    var minValue: AUValue { get }
    var maxValue: AUValue { get }
    var unit: AudioUnitParameterUnit { get }
    var unitName: String? { get }
    var flags: AudioUnitParameterOptions { get }
    var address: AUParameterAddress { get }
    var valueStrings: [String]? { get }
    var dependentParameters: [NSNumber]? { get }
    var value: AUValue
    func setValue(_ value: AUValue, originator originator: AUParameterObserverToken)
    func setValue(_ value: AUValue, originator originator: AUParameterObserverToken, atHostTime hostTime: UInt64)
    func stringFromValue(_ value: UnsafePointer<AUValue>) -> String
    func valueFromString(_ string: String) -> AUValue
}

class AUParameter : AUParameterNode, NSSecureCoding {
    var minValue: AUValue { get }
    var maxValue: AUValue { get }
    var unit: AudioUnitParameterUnit { get }
    var unitName: String? { get }
    var flags: AudioUnitParameterOptions { get }
    var address: AUParameterAddress { get }
    var valueStrings: [String]? { get }
    var dependentParameters: [NSNumber]? { get }
    var value: AUValue
    func setValue(_ value: AUValue, originator originator: AUParameterObserverToken)
    func setValue(_ value: AUValue, originator originator: AUParameterObserverToken, atHostTime hostTime: UInt64)
    func stringFromValue(_ value: UnsafePointer<AUValue>) -> String
    func valueFromString(_ string: String) -> AUValue
}

class AUParameterGroup : AUParameterNode, NSSecureCoding, NSCoding {
    var children: [AUParameterNode] { get }
    var allParameters: [AUParameter] { get }
}

class AUParameterGroup : AUParameterNode, NSSecureCoding {
    var children: [AUParameterNode] { get }
    var allParameters: [AUParameter] { get }
}

class AUParameterTree : AUParameterGroup {
    func parameterWithAddress(_ address: AUParameterAddress) -> AUParameter?
    func parameterWithID(_ paramID: AudioUnitParameterID, scope scope: AudioUnitScope, element element: AudioUnitElement) -> AUParameter?
}
extension AUParameterTree {
    class func createParameterWithIdentifier(_ identifier: String, name name: String, address address: AUParameterAddress, min min: AUValue, max max: AUValue, unit unit: AudioUnitParameterUnit, unitName unitName: String?, flags flags: AudioUnitParameterOptions, valueStrings valueStrings: [String]?, dependentParameters dependentParameters: [NSNumber]?) -> AUParameter
    class func createGroupWithIdentifier(_ identifier: String, name name: String, children children: [AUParameterNode]) -> AUParameterGroup
    class func createGroupTemplate(_ children: [AUParameterNode]) -> AUParameterGroup
    class func createGroupFromTemplate(_ templateGroup: AUParameterGroup, identifier identifier: String, name name: String, addressOffset addressOffset: AUParameterAddress) -> AUParameterGroup
    class func createTreeWithChildren(_ children: [AUParameterNode]) -> AUParameterTree
}

class AUParameterTree : AUParameterGroup, NSSecureCoding {
    func parameterWithAddress(_ address: AUParameterAddress) -> AUParameter?
    func parameterWithID(_ paramID: AudioUnitParameterID, scope scope: AudioUnitScope, element element: AudioUnitElement) -> AUParameter?
}
extension AUParameterTree {
    class func createParameterWithIdentifier(_ identifier: String, name name: String, address address: AUParameterAddress, min min: AUValue, max max: AUValue, unit unit: AudioUnitParameterUnit, unitName unitName: String?, flags flags: AudioUnitParameterOptions, valueStrings valueStrings: [String]?, dependentParameters dependentParameters: [NSNumber]?) -> AUParameter
    class func createGroupWithIdentifier(_ identifier: String, name name: String, children children: [AUParameterNode]) -> AUParameterGroup
    class func createGroupTemplate(_ children: [AUParameterNode]) -> AUParameterGroup
    class func createGroupFromTemplate(_ templateGroup: AUParameterGroup, identifier identifier: String, name name: String, addressOffset addressOffset: AUParameterAddress) -> AUParameterGroup
    class func createTreeWithChildren(_ children: [AUParameterNode]) -> AUParameterTree
}

struct AURenderEvent {
    init()
}

struct AURenderEvent {
    var head: AURenderEventHeader
    var parameter: AUParameterEvent
    var MIDI: AUMIDIEvent
    init(head head: AURenderEventHeader)
    init(parameter parameter: AUParameterEvent)
    init(MIDI MIDI: AUMIDIEvent)
    init()
}