DiagnosticsSerializationDelegate constructor
Creates a simple DiagnosticsSerializationDelegate that controls the
subtreeDepth and whether to includeProperties.
For additional configuration options, extend DiagnosticsSerializationDelegate and provide custom implementations for the methods of this class.
Implementation
const factory DiagnosticsSerializationDelegate({int subtreeDepth, bool includeProperties}) =
    _DefaultDiagnosticsSerializationDelegate;