GatsbyContentfulFluid, is there a presentationWidth property?

Ecosystem
1

Sorry can’t find this in any docs. I have a Gatsby template where I want the fluid image to not exceed the original image’s width. This seems to be available in GatsbyImageSharp, here are the docs: https://www.gatsbyjs.org/packages/gatsby-image/#avoiding-stretched-images-using-the-fluid-type

but for the life of me can’t figure out how to use this with contentful. My Graphql query looks like:

export const query = graphql`
  query($slug: String!) {
    contentfulWork(slug: { eq: $slug }) {
      heroImage {
        title
        fluid(maxWidth: 1800) {
          ...GatsbyContentfulFluid_noBase64
        }
        file {
          url
          contentType
        }
      }
    }
  }
`

any help greatly appreciated, thanks.