 
 /// Sampler
 public class Sampler: Node {
-    
+
     /// Connected nodes
     public var connections: [Node] { [] }
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     /// Underlying AVAudioNode
     public var avAudioNode: AVAudioNode = instantiate(instrument: "samp")
 
     // MARK: - Parameters
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     private static var nonRampFlags: AudioUnitParameterOptions = [.flag_IsReadable, .flag_IsWritable]
 
     /// Specification details for master volume

        defaultValue: 0.0,
        range: 0 ... 12,
        unit: .relativeSemiTones)
    
    /// Vibrato amount (semitones)
    @Parameter(vibratoDepthDef) public var vibratoDepth: AUValue
    
    /// Specification details for vibratoFrequency
    public static let vibratoFrequencyDef = NodeParameterDef(
        identifier: "vibratoFrequency",

        defaultValue: 0.0,
        range: -24 ... 24,
        unit: .relativeSemiTones)

    /// Pitch offset (semitones)
    @Parameter(pitchBendDef) public var pitchBend: AUValue

    /// Specification details for vibratoDepth
    public static let vibratoDepthDef = NodeParameterDef(
        identifier: "vibratoDepth",
