Sample JavaScript code that uses apollo-client on the frontend:

function getGql(newVersion) {
  return gql`
      mutation TestMutation(
          $name: String!
          ${(newVersion)?`$format: Boolean`:``}
      ) {
          testMutation(
              name: $name
              ${(newVersion)?`format: $format`:``}
          )
      }
  `;
}

Question: Can I interpolate gql-tag query so that the above method evaluates to either:

gql`
      mutation TestMutation(
          $name: String!
          $format: Boolean
      ) {
          testMutation(
              name: $name
              format: $format
          )
      }
  `;

or:

gql`
      mutation TestMutation(
          $name: String!
      ) {
          testMutation(
              name: $name
          )
      }
  `;

...based on the boolean parameter to getGql()?