Line 20: Native JsType method 'boolean PipelineItemLayoutModel.equals(Object)' should be native or abstract.

file.java

@JsType(isNative=true, namespace=GLOBAL, name="Object")
public class PipelineItemLayoutModel
{
  public String templateName;
  public int alignment; // 0 is left, 1 is right
  public int openType;
  public String button;
  public String buttonTheme;
  public String buttonColor;
  public List<String> activeFields;

  /** Used to detect change */
  public final boolean equals(Object obj)
  {
    if (obj instanceof PipelineItemLayoutModel) {
      PipelineItemLayoutModel layoutModel = (PipelineItemLayoutModel) obj;
      // Compare all fields.
      return templateName.equals(layoutModel.templateName) &&
        alignment == layoutModel.alignment &&
        openType == layoutModel.openType &&
        button.equals(layoutModel.button) &&
        buttonTheme.equals(layoutModel.buttonTheme) &&
        buttonColor.equals(layoutModel.buttonColor) &&
        activeFields.equals(layoutModel.activeFields);
    }
    else {
      return false;
    }
  }
}

//
[INFO]    Errors in client/model/PipelineItemLayoutModel.java
[INFO]       [ERROR] Line 20: Native JsType method 'boolean PipelineItemLayoutModel.equals(Object)' should be native or abstract.