WaterfallChartSeries

{
    "customSubtotals": [
        {
            "dataIsSubtotal": true,
            "label": "string",
            "subtotalIndex": 0
        }
    ],
    "data": {
        "aggregateType": "CHART_AGGREGATE_TYPE_UNSPECIFIED",
        "columnReference": {
            "name": "string"
        },
        "groupRule": {
            "dateTimeRule": {
                "type": "CHART_DATE_TIME_RULE_TYPE_UNSPECIFIED"
            },
            "histogramRule": {
                "intervalSize": 0,
                "maxValue": 0,
                "minValue": 0
            }
        },
        "sourceRange": {
            "sources": [
                {}
            ]
        }
    },
    "dataLabel": {
        "customLabelData": {
            "aggregateType": "CHART_AGGREGATE_TYPE_UNSPECIFIED",
            "columnReference": {
                "name": "string"
            },
            "groupRule": {
                "dateTimeRule": {
                    "type": "CHART_DATE_TIME_RULE_TYPE_UNSPECIFIED"
                },
                "histogramRule": {
                    "intervalSize": 0,
                    "maxValue": 0,
                    "minValue": 0
                }
            },
            "sourceRange": {
                "sources": [
                    {}
                ]
            }
        },
        "placement": "DATA_LABEL_PLACEMENT_UNSPECIFIED",
        "textFormat": {
            "bold": true,
            "fontFamily": "string",
            "fontSize": 0,
            "foregroundColor": {},
            "foregroundColorStyle": {
                "rgbColor": {},
                "themeColor": "THEME_COLOR_TYPE_UNSPECIFIED"
            },
            "italic": true,
            "link": {
                "uri": "string"
            },
            "strikethrough": true,
            "underline": true
        },
        "type": "DATA_LABEL_TYPE_UNSPECIFIED"
    },
    "hideTrailingSubtotal": true,
    "negativeColumnsStyle": {
        "color": {},
        "colorStyle": {
            "rgbColor": {},
            "themeColor": "THEME_COLOR_TYPE_UNSPECIFIED"
        },
        "label": "string"
    },
    "positiveColumnsStyle": {
        "color": {},
        "colorStyle": {
            "rgbColor": {},
            "themeColor": "THEME_COLOR_TYPE_UNSPECIFIED"
        },
        "label": "string"
    },
    "subtotalColumnsStyle": {
        "color": {},
        "colorStyle": {
            "rgbColor": {},
            "themeColor": "THEME_COLOR_TYPE_UNSPECIFIED"
        },
        "label": "string"
    }
}