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ObjectMapper provides functionality for reading and writing JSON, either to and
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Fake signature of an existing Java class.
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This class is used to encode a string using the format required by
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A Set is a data structure which does not allow duplicate elements.
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Walk the nodes of the tree left-to-right or right-to-left. Note that in
descending iterations, next
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Patterns are compiled regular expressions. In many cases, convenience methods
such as String#matches
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