QueryParameters.ContainsKey C# (CSharp) Method

    public bool ContainsKey(string key)
    {
        return parameterSet.ContainsKey(key) && parameterSet[key] != null &&
          parameterSet[key].Count() > 0;
    }

        public override Task <dynamic> ExecuteAsync()
        {
            if (!_imageIds.Any())
            {
                throw new SdkException(MustSpecifyAtLeastOneImageIdMessage);
            }

            var ids = string.Join(Comma, _imageIds);

            if (_imageIds.Count > 1)
            {
                QueryParameters.Add(IdsKey, ids);
                Path = ImageBatchPath;
            }
            else
            {
                Path = string.Format(ImagePath, ids);
            }

            if (_fields.Any())
            {
                if (QueryParameters.ContainsKey(FieldsKey))
                {
                    QueryParameters[FieldsKey] = _fields;
                }
                else
                {
                    QueryParameters.Add(FieldsKey, _fields);
                }
            }

            return(base.ExecuteAsync());
        }