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          A registry for service provider instances. | 
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          A superinterface for functionality common to all Image I/O service provider interfaces (SPIs). | 
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            The service provider interface (SPI) for
 ImageInputStreams.
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            The service provider interface (SPI) for
 ImageOutputStreams.
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            The service provider interface (SPI) for ImageReaders.
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            A superclass containing instance variables and methods common to
 ImageReaderSpi and ImageWriterSpi.
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            The service provider interface (SPI) for ImageTranscoders.
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            The service provider interface (SPI) for ImageWriters.
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            An optional interface that may be provided by service provider
 objects that will be registered with a
 ServiceRegistry.
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          A registry for service provider instances. | 
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            A simple filter interface used by
 ServiceRegistry.getServiceProviders to select
 providers matching an arbitrary criterion.
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