code: public ReplicationInstance withVpcSecurityGroups(VpcSecurityGroupMembership... vpcSecurityGroups) {
          if (this.vpcSecurityGroups == null) {
              setVpcSecurityGroups(new java.util.ArrayList<VpcSecurityGroupMembership>(vpcSecurityGroups.length));
          }
          for (VpcSecurityGroupMembership ele : vpcSecurityGroups) {
              this.vpcSecurityGroups.add(ele);
          }
          return this;
      }
docs: <p>
  The VPC security group for the instance.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setVpcSecurityGroups(java.util.Collection)} or {@link #withVpcSecurityGroups(java.util.Collection)} if
  you want to override the existing values.
  </p>
  
  @param vpcSecurityGroups
  The VPC security group for the instance.
  @return Returns a reference to this object so that method calls can be chained together.