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    "support_level": "stable"
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      "pointsAtX": {},
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      "SVG_STITCHTYPE_STITCH": {},
      "SVG_STITCHTYPE_UNKNOWN": {},
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      "SVG_TURBULENCE_TYPE_TURBULENCE": {},
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      "baseFrequencyX": {},
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      "numOctaves": {},
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      "stitchTiles": {},
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      "primitiveUnits": {},
      "setFilterRes": {},
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      "SVG_LENGTHTYPE_EXS": {},
      "SVG_LENGTHTYPE_IN": {},
      "SVG_LENGTHTYPE_MM": {},
      "SVG_LENGTHTYPE_NUMBER": {},
      "SVG_LENGTHTYPE_PC": {},
      "SVG_LENGTHTYPE_PERCENTAGE": {},
      "SVG_LENGTHTYPE_PT": {},
      "SVG_LENGTHTYPE_PX": {},
      "SVG_LENGTHTYPE_UNKNOWN": {},
      "convertToSpecifiedUnits": {},
      "newValueSpecifiedUnits": {},
      "unitType": {},
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      "valueAsString": {},
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    "dart_action": "unstable",
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      "numberOfItems": {},
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      "replaceItem": {}
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      "SVG_MARKERUNITS_UNKNOWN": {},
      "SVG_MARKERUNITS_USERSPACEONUSE": {},
      "SVG_MARKER_ORIENT_ANGLE": {},
      "SVG_MARKER_ORIENT_AUTO": {},
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      "refX": {},
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      "setOrientToAngle": {},
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      "flipX": {},
      "flipY": {},
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      "rotateFromVector": {},
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      "scaleNonUniform": {},
      "skewX": {},
      "skewY": {},
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    "support_level": "stable"
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      "SVG_PAINTTYPE_RGBCOLOR": {},
      "SVG_PAINTTYPE_RGBCOLOR_ICCCOLOR": {},
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      "SVG_PAINTTYPE_URI_CURRENTCOLOR": {},
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      "SVG_PAINTTYPE_URI_RGBCOLOR": {},
      "SVG_PAINTTYPE_URI_RGBCOLOR_ICCCOLOR": {},
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      "createSVGPathSegCurvetoCubicAbs": {},
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      "createSVGPathSegCurvetoCubicSmoothAbs": {},
      "createSVGPathSegCurvetoCubicSmoothRel": {},
      "createSVGPathSegCurvetoQuadraticAbs": {},
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      "createSVGPathSegCurvetoQuadraticSmoothAbs": {},
      "createSVGPathSegCurvetoQuadraticSmoothRel": {},
      "createSVGPathSegLinetoAbs": {},
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      "createSVGPathSegLinetoVerticalRel": {},
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      "PATHSEG_CURVETO_CUBIC_REL": {},
      "PATHSEG_CURVETO_CUBIC_SMOOTH_ABS": {},
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      "PATHSEG_CURVETO_QUADRATIC_SMOOTH_ABS": {},
      "PATHSEG_CURVETO_QUADRATIC_SMOOTH_REL": {},
      "PATHSEG_LINETO_ABS": {},
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      "PATHSEG_LINETO_HORIZONTAL_REL": {},
      "PATHSEG_LINETO_REL": {},
      "PATHSEG_LINETO_VERTICAL_ABS": {},
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      "height": {},
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      "patternContentUnits": {},
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    "support_level": "stable"
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    "dart_action": "unstable",
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    "dart_action": "unstable",
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    "dart_action": "unstable",
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      "getScreenCTM": {
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      "farthestViewportElement": {
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      "getBBox": {
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      "getCTM": {
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      "getTransformToElement": {
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      "hasExtension": {
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      "points": {},
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      "requiredFeatures": {
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      "systemLanguage": {
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      "SVG_MEETORSLICE_SLICE": {},
      "SVG_MEETORSLICE_UNKNOWN": {},
      "SVG_PRESERVEASPECTRATIO_NONE": {},
      "SVG_PRESERVEASPECTRATIO_UNKNOWN": {},
      "SVG_PRESERVEASPECTRATIO_XMAXYMAX": {},
      "SVG_PRESERVEASPECTRATIO_XMAXYMID": {},
      "SVG_PRESERVEASPECTRATIO_XMAXYMIN": {},
      "SVG_PRESERVEASPECTRATIO_XMIDYMAX": {},
      "SVG_PRESERVEASPECTRATIO_XMIDYMID": {},
      "SVG_PRESERVEASPECTRATIO_XMIDYMIN": {},
      "SVG_PRESERVEASPECTRATIO_XMINYMAX": {},
      "SVG_PRESERVEASPECTRATIO_XMINYMID": {},
      "SVG_PRESERVEASPECTRATIO_XMINYMIN": {},
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      "meetOrSlice": {}
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      "cy": {},
      "fr": {},
      "fx": {},
      "fy": {},
      "r": {}
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      "width": {},
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      "RENDERING_INTENT_AUTO": {},
      "RENDERING_INTENT_PERCEPTUAL": {},
      "RENDERING_INTENT_RELATIVE_COLORIMETRIC": {},
      "RENDERING_INTENT_SATURATION": {},
      "RENDERING_INTENT_UNKNOWN": {}
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      "checkIntersection": {},
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      "contentStyleType": {},
      "createSVGAngle": {},
      "createSVGLength": {},
      "createSVGMatrix": {},
      "createSVGNumber": {},
      "createSVGPoint": {},
      "createSVGRect": {},
      "createSVGTransform": {},
      "createSVGTransformFromMatrix": {},
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      "pixelUnitToMillimeterX": {},
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      "screenPixelToMillimeterX": {},
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      "title": {},
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      "getComputedTextLength": {},
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      "startOffset": {}
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      "SVG_TRANSFORM_SKEWX": {},
      "SVG_TRANSFORM_SKEWY": {},
      "SVG_TRANSFORM_TRANSLATE": {},
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      "angle": {},
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    "dart_action": "unstable",
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    "support_level": "stable"
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    "dart_action": "unstable",
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      "SVG_UNIT_TYPE_UNKNOWN": {},
      "SVG_UNIT_TYPE_USERSPACEONUSE": {}
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      "instanceRoot": {},
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