{
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            "version_added": false
          },
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            "version_added": false
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            "version_added": null
          },
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            "version_added": null
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                  {
                    "type": "preference",
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                    "value_to_set": "Enabled"
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                ]
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                    "type": "preference",
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                  {
                    "type": "preference",
                    "name": "#web-payments",
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                {
                  "type": "preference",
                  "name": "#web-payments",
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                "version_added": "56",
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            ],
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                "notes": "Enabled by default in nightly US English builds of Firefox 64 and later, and on other localizations when geolocation indicates the user is in the United States or Canada."
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                    "value_to_set": "<em>comma-delineated 2-character country code list</em>"
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                ]
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              "version_added": false
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              "version_added": false
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              "version_added": null
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              "version_added": false
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            }
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            "experimental": true,
            "standard_track": true,
            "deprecated": false
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                "version_added": "71",
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                  {
                    "type": "preference",
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                ]
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            ],
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                "version_added": "71",
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                  {
                    "type": "preference",
                    "name": "#web-payments",
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                  {
                    "type": "preference",
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                {
                  "type": "preference",
                  "name": "#web-payments",
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              ]
            },
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              {
                "version_added": "64",
                "notes": "Enabled by default in nightly US English builds of Firefox 64 and later, and on other localizations when geolocation indicates the user is in the United States or Canada."
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              {
                "version_added": "56",
                "flags": [
                  {
                    "type": "preference",
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                  {
                    "type": "preference",
                    "name": "dom.payments.request.supportedRegions",
                    "value_to_set": "<em>comma-delineated 2-character country code list</em>"
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                ]
              }
            ],
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              {
                "version_added": "64",
                "notes": "Enabled by default in nightly US English builds of Firefox 64 and later, and on other localizations when geolocation indicates the user is in the United States or Canada."
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              {
                "version_added": "56",
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                    "type": "preference",
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                  {
                    "type": "preference",
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                    "value_to_set": "<em>comma-delineated 2-character country code list</em>"
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                ]
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              "version_added": false
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              "version_added": false
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              "version_added": null
            },
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              "version_added": null
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                "version_added": "71",
                "flags": [
                  {
                    "type": "preference",
                    "name": "#web-payments",
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                  {
                    "type": "preference",
                    "name": "#web-payments",
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                ]
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            ],
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              {
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                    "type": "preference",
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                    "type": "preference",
                    "name": "#web-payments",
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                ]
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            ],
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                {
                  "type": "preference",
                  "name": "#web-payments",
                  "value_to_set": "Enabled"
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              ]
            },
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                ]
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            ],
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}