anchor.diff:    ///
     /// The [toStringDeep] method takes other arguments, but those are intended
     /// for internal use when recursing to the descendants, and so can be ignored.
  +  ///
  +  /// In release mode, far less information is retained and some information may
  +  /// not print at all.
     ///
     /// See also:
     ///
  
positive.code:   /// filter which diagnostics are shown.
    off,
  }
  /// Styles for displaying a node in a [DiagnosticsNode] tree.
  ///
  /// See also:
  ///
  
negative.code: 
  /// Configuration specifying how a particular [DiagnosticsTreeStyle] should be
  /// rendered as text art.
  ///
  /// In release mode, these configurations may be ignored, as diagnostics are
  /// compacted or truncated to save on binary size.
  ///
  /// See also:
  ///
  