code: public void setInUseBy(java.util.Collection<String> inUseBy) {
          if (inUseBy == null) {
              this.inUseBy = null;
              return;
          }
  
          this.inUseBy = new java.util.ArrayList<String>(inUseBy);
      }
docs: <p>
  A list of ARNs for the AWS resources that are using the certificate. A certificate can be used by multiple AWS
  resources.
  </p>
  
  @param inUseBy
  A list of ARNs for the AWS resources that are using the certificate. A certificate can be used by multiple
  AWS resources.