code: public ModifyVpcEndpointRequest withAddSecurityGroupIds(String... addSecurityGroupIds) {
          if (this.addSecurityGroupIds == null) {
              setAddSecurityGroupIds(new com.amazonaws.internal.SdkInternalList<String>(addSecurityGroupIds.length));
          }
          for (String ele : addSecurityGroupIds) {
              this.addSecurityGroupIds.add(ele);
          }
          return this;
      }
docs: <p>
  (Interface endpoint) One or more security group IDs to associate with the network interface.
  </p>
  <p>
  <b>NOTE:</b> This method appends the values to the existing list (if any). Use
  {@link #setAddSecurityGroupIds(java.util.Collection)} or {@link #withAddSecurityGroupIds(java.util.Collection)}
  if you want to override the existing values.
  </p>
  
  @param addSecurityGroupIds
  (Interface endpoint) One or more security group IDs to associate with the network interface.
  @return Returns a reference to this object so that method calls can be chained together.