public static Border createComplexPopupTextFieldBorder() {
    return JBUI.Borders.compound(new JBEmptyBorder(JBUI.CurrentTheme.ComplexPopup.textFieldBorderInsets().getUnscaled()),
                                 JBUI.Borders.customLine(JBUI.CurrentTheme.CustomFrameDecorations.separatorForeground(), 0, 0,
                                                         JBUI.CurrentTheme.ComplexPopup.TEXT_FIELD_SEPARATOR_HEIGHT, 0),
                                 new JBEmptyBorder(JBUI.CurrentTheme.ComplexPopup.textFieldInputInsets().getUnscaled()));
  }
public static Border createComplexPopupTextFieldBorder()