private static MarkerBuilder PassThroughNonNull(MarkerBuilder builder) { if (builder == null) { throw new ArgumentNullException(nameof(builder)); } return(builder); }
protected MarkerBuilder(MarkerBuilder builder) : this(PassThroughNonNull(builder).Marker) { }
private static MarkerBuilder PassThroughNonNull(MarkerBuilder builder) { if (builder == null) throw new ArgumentNullException("builder"); return builder; }