<Map  srs="+init=epsg:3857">
  <Style name="My Style">
    <Rule>
      <RasterSymbolizer/>
    </Rule>
  </Style>
  <Layer name="world" srs="+init=epsg:4326">
    <StyleName>My Style</StyleName>
    <Datasource>
      <Parameter name="file">/luojun/github/sl-component-vis-raster-v2/test/data/clip2_cog.tif</Parameter>
      <Parameter name="type">gdal</Parameter>
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</Map>