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Return the first registered implementation that has the desired features, or null if none is found.
"Experimental - subject to change" -
Parameters:
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features |
A string that specifies which features are required. This is a space separated list in which each feature is specified by its name optionally followed by a space and a version number. This is something like: "XML 1.0 Traversal 2.0" |
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Returns:
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An implementation that has the desired features, or
null if this source has none.
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Since:
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DOM Level 3
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