valid {
    input.Body.ProductCode == STRING
    input.Body.Filter.CUSTOMER_IDENTIFIER[_] == STRING
    input.Body.Filter.DIMENSION[_] == STRING
    input.Body.NextToken == STRING
    input.Body.MaxResults == INTEGER
    input.ProviderMetadata.Account == STRING
    input.ProviderMetadata.AccessKeyId == STRING
    input.ProviderMetadata.Region == STRING
}