def build_section_4(oSupList, lReport):
    lReport.extend(display.build_report_section_divider(' 4. Warnings Under Investigation'))
    for oSup in oSupList.get_investigate_suppression_rules():
        lReport.extend(display.build_suppressed_warning_header(oSup, 2))
        lReport.extend(display.build_suppressed_warning_table(oSup, 4))