code: public void setGroups(java.util.Collection<GroupIdentifier> groups) {
          if (groups == null) {
              this.groups = null;
              return;
          }
  
          this.groups = new com.amazonaws.internal.SdkInternalList<GroupIdentifier>(groups);
      }
docs: <p>
  One or more security groups.
  </p>
  
  @param groups
  One or more security groups.