{
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            "version_added": false,
            "notes": "Implementation tracked in <a href='https://bugzil.la/1290958'>bug 1290958</a>"
          },
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            "version_added": false,
            "notes": "Implementation tracked in <a href='https://bugzil.la/1290958'>bug 1290958</a>"
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              "version_added": "62"
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              "version_added": false,
              "notes": "Implementation tracked in <a href='https://bugzil.la/1290958'>bug 1290958</a>"
            },
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              "version_added": false,
              "notes": "Implementation tracked in <a href='https://bugzil.la/1290958'>bug 1290958</a>"
            },
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              "version_added": null
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              "version_added": "49"
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              "version_added": null
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            "safari_ios": {
              "version_added": null
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              "version_added": "8.0"
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            }
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            "chrome": {
              "version_added": "62"
            },
            "chrome_android": {
              "version_added": "62"
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              "version_added": "18"
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              "version_added": false,
              "notes": "Implementation tracked in <a href='https://bugzil.la/1290958'>bug 1290958</a>"
            },
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              "version_added": false,
              "notes": "Implementation tracked in <a href='https://bugzil.la/1290958'>bug 1290958</a>"
            },
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              "version_added": null
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            "opera": {
              "version_added": "49"
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              "version_added": "46"
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              "version_added": null
            },
            "safari_ios": {
              "version_added": null
            },
            "samsunginternet_android": {
              "version_added": "8.0"
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            "webview_android": {
              "version_added": "62"
            }
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            "experimental": true,
            "standard_track": true,
            "deprecated": false
          }
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          "mdn_url": "https://developer.mozilla.org/docs/Web/API/NavigationPreloadManager/getState",
          "support": {
            "chrome": {
              "version_added": "62"
            },
            "chrome_android": {
              "version_added": "62"
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              "version_added": "18"
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              "version_added": false,
              "notes": "Implementation tracked in <a href='https://bugzil.la/1290958'>bug 1290958</a>"
            },
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              "version_added": false,
              "notes": "Implementation tracked in <a href='https://bugzil.la/1290958'>bug 1290958</a>"
            },
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              "version_added": null
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              "version_added": "49"
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            "safari_ios": {
              "version_added": null
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              "version_added": "8.0"
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            "webview_android": {
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          "status": {
            "experimental": true,
            "standard_track": true,
            "deprecated": false
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      "setHeaderValue": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/NavigationPreloadManager/setHeaderValue",
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              "version_added": "62"
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            "chrome_android": {
              "version_added": "62"
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              "version_added": "18"
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            "firefox": {
              "version_added": false,
              "notes": "Implementation tracked in <a href='https://bugzil.la/1290958'>bug 1290958</a>"
            },
            "firefox_android": {
              "version_added": false,
              "notes": "Implementation tracked in <a href='https://bugzil.la/1290958'>bug 1290958</a>"
            },
            "ie": {
              "version_added": null
            },
            "opera": {
              "version_added": "49"
            },
            "opera_android": {
              "version_added": "46"
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              "version_added": null
            },
            "safari_ios": {
              "version_added": null
            },
            "samsunginternet_android": {
              "version_added": "8.0"
            },
            "webview_android": {
              "version_added": "62"
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          "status": {
            "experimental": true,
            "standard_track": true,
            "deprecated": false
          }
        }
      }
    }
  }
}