code: public void setDefaultSecurityGroupNames(java.util.Collection<String> defaultSecurityGroupNames) {
          if (defaultSecurityGroupNames == null) {
              this.defaultSecurityGroupNames = null;
              return;
          }
  
          this.defaultSecurityGroupNames = new com.amazonaws.internal.SdkInternalList<String>(defaultSecurityGroupNames);
      }
docs: <p>
  An array containing the layer's security group names.
  </p>
  
  @param defaultSecurityGroupNames
  An array containing the layer's security group names.