code: public DBInstance withDomainMemberships(DomainMembership... domainMemberships) {
          if (this.domainMemberships == null) {
              setDomainMemberships(new java.util.ArrayList<DomainMembership>(domainMemberships.length));
          }
          for (DomainMembership ele : domainMemberships) {
              this.domainMemberships.add(ele);
          }
          return this;
      }
docs: <p>
  Not supported
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setDomainMemberships(java.util.Collection)} or {@link #withDomainMemberships(java.util.Collection)} if
  you want to override the existing values.
  </p>
  
  @param domainMemberships
  Not supported
  @return Returns a reference to this object so that method calls can be chained together.