code: public void setSuccessful(java.util.Collection<AssociationDescription> successful) {
          if (successful == null) {
              this.successful = null;
              return;
          }
  
          this.successful = new com.amazonaws.internal.SdkInternalList<AssociationDescription>(successful);
      }
docs: <p>
  Information about the associations that succeeded.
  </p>
  
  @param successful
  Information about the associations that succeeded.