isBinaryContentType (bodyType, contentObj) {
    return _.keys(contentObj[bodyType]).length === 0 && fileUploadTypes.includes(bodyType);
  }
Check if request body type is binary type.
Open api 3.1 does not need that a binary content has a schema within. It comes as an empty object
@param {string} bodyType the bodyType provided in a request body content
@param {object} contentObj The request body content provided in spec
@returns {boolean} Returns true if content is a binary type