public bool Build(TransformBuilderContext context, IReadOnlyDictionary <string, string> transformValues) { if (transformValues.TryGetValue(QueryValueParameterKey, out var queryValueParameter)) { TransformHelpers.CheckTooManyParameters(transformValues, expected: 2); if (transformValues.TryGetValue(AppendKey, out var appendValue)) { context.AddQueryValue(queryValueParameter, appendValue, append: true); } else if (transformValues.TryGetValue(SetKey, out var setValue)) { context.AddQueryValue(queryValueParameter, setValue, append: false); } else { throw new NotSupportedException(string.Join(";", transformValues.Keys)); } } else if (transformValues.TryGetValue(QueryRouteParameterKey, out var queryRouteParameter)) { TransformHelpers.CheckTooManyParameters(transformValues, expected: 2); if (transformValues.TryGetValue(AppendKey, out var routeValueKeyAppend)) { context.AddQueryRouteValue(queryRouteParameter, routeValueKeyAppend, append: true); } else if (transformValues.TryGetValue(SetKey, out var routeValueKeySet)) { context.AddQueryRouteValue(queryRouteParameter, routeValueKeySet, append: false); } else { throw new NotSupportedException(string.Join(";", transformValues.Keys)); } } else if (transformValues.TryGetValue(QueryRemoveParameterKey, out var removeQueryParameter)) { TransformHelpers.CheckTooManyParameters(transformValues, expected: 1); context.AddQueryRemoveKey(removeQueryParameter); } else { return(false); } return(true); }